Pattern independence
One zone can hold a steady slow pulse while the other cycles through patterns. Ten patterns, applied per motor rather than to the whole device.
Engineering · Quality · Compliance
Inside the Slow Duo dual-motor platform
Two independently driven motors on one control platform, with a published test standard behind every claim: motor noise checked to ≤60 dB(A) at 30 cm on every unit, water resistance IPX6 jet-protected on the AB0133 wand unit, the AB0160 rose-form unit, the AB0195 sculpted wand, the AB0196 dual-action insertable and the AB0198A swan wand; IPX5 on 11 rinse-safe models; IP7 submersible on the AB0212A wearable, the AB0178 suction unit, the AB0128 pen unit, the AB0136 dual-head wearable, the AB0166 tongue wand, the AB0175 bendable wearable, the AB0176 lit rabbit insertable, the AB0186B telescoping insertable and the AB0199 peanut-waist insertable, silicone measured to FDA 21 CFR 177.2600, and an outgoing defect rate held below 0.1% by 100% final inspection. This page is the evidence pack a buyer needs to defend the specification to a category manager or a compliance team.
Batch records, certificates and material test reports are released to verified buyers.
500K+units / month capacity
<0.1%outgoing defect rate
AQL 2.5outgoing sampling level
500 hmotor durability test
What makes the Slow Duo platform different? The dual-motor massagers are engineered for the two things B2B buyers return units over — noise and battery — and every claim is documented against a named standard: quiet ≤60 dB(A) at 30 cm, body-safe medical-grade silicone tested to FDA 21 CFR 177.2600, phthalate-free to REACH Annex XVII, IPX5 or IPX7 to IEC 60529 (rated per model), and 100% final inspection holding the outgoing defect rate below 0.1%.
- Quiet ≤60 dB(A)
- Body-safe silicone (FDA 21 CFR 177.2600)
- Phthalate-free (REACH)
- IPX5 / IPX6 / IP7 water-resistant (per model)
- CE / RoHS / FDA
- 100% final inspection
- SGS / Bureau Veritas / QIMA
- AQL 2.5 sampling
- Discreet, unbranded packaging
Production runs through our manufacturing partner in Dongguan, Guangdong, China, where tooling, assembly and quality control sit under one roof — with no subcontracting on core components.
What the engineering means for your order
A specification is not a marketing line. Each one below removes a specific risk that turns up later as a return, a chargeback or a compliance hold at customs.
01
Fewer returns
A published ≤60 dB(A) noise limit and a full discharge soak on every unit target the two things buyers actually return devices over: noise and battery.
02
Compliance-ready
CE DoC, RoHS, FDA material statements, MSDS and per-model water-resistance batch reports are prepared before shipment, so customs and marketplace review are not your critical path.
03
Defensible claims
Every figure on this page names the standard it was measured against. Your compliance team can repeat the test instead of taking the copy on trust.
04
A reason to be chosen
Dual independent motors are the specification that lifts a SKU above the entry tier — and give the end customer a reason to replace a device rather than add one.
Two motors, two zones
Most devices in this category take one motor and split its output. The result is a single rhythm travelling through two contact points — adjust one, and you have adjusted both.
Slow Duo runs two physically separate motors, each on its own drive channel. A low-speed motor is easier to control and easier to keep quiet: at lower RPM there is less rotor imbalance, less shell resonance, and less of the whine that buyers return units over.
Schematic of the dual-motor layout: two motors on a shared PCB, one battery pack, one control surface. Structural dimensions differ between the three dual-motor models; the architecture does not.
What independent control actually changes
Intensity independence
Three intensity levels per motor. The pairing is yours to set, not a factory compromise between the two zones.
Low-end resolution
The speed range is weighted toward the low end, where most devices have two coarse settings and a jump. That is the range buyers use most.
Measured motor range
On the A0171, the shaft motor runs 150–9,500 RPM across three steps and the contact-point motor runs at 12,000 RPM — two different drive characters on one device.
Noise engineering
Acoustic performance in this category is decided by three things: rotor balance, the stiffness of the shell where the motor mounts, and whether anything inside is free to rattle. We address all three.
- Motor selection. Motors are screened for balance at the assembly line, not just at the supplier.
- Mount rigidity. The motor sits in a moulded cradle rather than against the shell wall, which stops the shell acting as a sounding board.
- Internal clearance. Wiring runs are fixed in channels so nothing moves against the chassis under load.
Motors are durability-tested to 500 hours, so acoustic behaviour is measured after wear — not only on a fresh sample. Cheap motors get louder as the bearing wears; ours are specified not to.
Motor noise measured to IEC 60268 in free field at 30 cm, maximum speed. Dual-motor models run 55–60 dB, single-motor 45–55 dB. The check is repeated on every production batch — not just the design sample.
Material safety — measured, not asserted
Skin-contact surfaces are medical-grade, body-safe, hypoallergenic silicone; the internal chassis is food-grade ABS. Silicone is non-porous, so it does not absorb residue and can be washed with warm water and mild soap without degrading.
The material claims are backed by third-party extraction tests rather than supplier declarations. Silicone is tested to FDA 21 CFR 177.2600 (food-contact extraction) by SGS; phthalates are screened to REACH Annex XVII across six groups with a not-detected result; restricted substances are measured to IEC 62321 across ten substances, all below the EU threshold.
Water resistance is stated per model, not as one range-wide figure: IPX6 jet-protected on the AB0133 wand unit, the AB0160 rose-form unit, the AB0195 sculpted wand, the AB0196 dual-action insertable and the AB0198A swan wand; IPX5 on 11 rinse-safe models; IP7 submersible on the AB0212A wearable, the AB0178 suction unit, the AB0128 pen unit, the AB0136 dual-head wearable, the AB0166 tongue wand, the AB0175 bendable wearable, the AB0176 lit rabbit insertable, the AB0186B telescoping insertable and the AB0199 peanut-waist insertable, each tested to IEC 60529 and confirmed on every production batch. The rinse-safe models suit cleaning and bathroom storage; the submersible models may be briefly immersed.
We do not publish a water-resistance rating the hardware has not passed. The rating on each product page is the one that model actually met, and the per-batch test report we ship names it by model.
Material grades you can specify
- Silicone hardnessShore 20A standard — soft, skin-like. Shore 15A (ultra-soft) and 30A (firmer) available from 500 units.
- Colour matchingPantone match to Delta-E ≤ 1.5, from a library of 80+ historical colourways.
- Skin contactMedical-grade, hypoallergenic, phthalate-free, non-porous.
- ChassisFood-grade ABS — light, dimensionally stable and acoustically dead, unlike a thin metal housing.
- DocumentationMSDS for every skin-contact component, plus the lab report for your material lot.
Quality control: four stages, one of them on every unit
Incoming material is inspected, in-process work is checked at milestones, and then every finished unit — not a sample — passes final inspection. The outgoing defect rate is held <0.1% across all production lines.
IQC — Incoming material
Silicone, ABS, motors and PCBAs are tested against the approved material specification before they enter production. Out-of-spec lots are rejected, not reworked.
IPQC — In-process
Dimensional checks, assembly validation and motor performance are verified at key production milestones.
FQC — 100% final inspection
Every finished unit is tested: IPX5 / IPX6 / IP7 waterproofing (per model), motor noise ≤60 dB(A) at 30 cm, charging cycle, surface finish and packaging integrity. This is where the defect rate is made, not measured.
OQC — Outgoing
Random AQL 2.5 sampling before shipment, with the batch record retained and shipped with the goods.
The test standards behind every claim
Each figure below names the standard it was measured against and the market requirement it satisfies. Third-party reports from SGS and Bureau Veritas are available to verified buyers on request.
| Parameter | Standard / method | Our result | Required for |
|---|---|---|---|
| Water resistance | IEC 60529 — IPX6 (powerful water jet) on the AB0133 wand unit, the AB0160 rose-form unit, the AB0195 sculpted wand, the AB0196 dual-action insertable and the AB0198A swan wand, IPX5 (jet, 1 m, 3 min) on the other rinse-safe models, and IP7 (immersion) on the AB0212A wearable, the AB0178 suction unit, the AB0128 pen unit, the AB0136 dual-head wearable, the AB0166 tongue wand, the AB0175 bendable wearable, the AB0176 lit rabbit insertable, the AB0186B telescoping insertable and the AB0199 peanut-waist insertable | Rated per model | EU CE, UK UKCA, marketplace listing |
| Motor noise | IEC 60268 — free field at 30 cm, maximum speed | ≤58 dB(A) measured (QC limit ≤60) | Consumer-electronics norm <65 dB(A) |
| Charge-cycle endurance | IEC 62133-2 §8.3 — full charge / discharge cycles | >80% capacity retained (300+ cycles) | Li-ion battery safety standard |
| Silicone material safety | FDA 21 CFR 177.2600 extraction test (SGS) | Pass — no extractable substances | US FDA, EU food-contact |
| RoHS substance limits | IEC 62321 — 10 restricted substances | All below EU threshold | EU 2015/863/EU amendment |
| Phthalate-free | REACH Annex XVII — 6 phthalate groups | Not detected | EU REACH, US CPSC |
| Electrical safety | IEC 62368-1 — insulation, creepage, clearance | Pass | EU CE (LVD 2014/35/EU) |
| EMC compliance | CISPR 32 — radiated and conducted emissions | Pass | EU CE (EMC 2014/30/EU) |
CE also covers the Low Voltage Directive 2014/35/EU and the EMC Directive 2014/30/EU; RoHS is covered by Directive 2011/65/EU and the UK equivalent. Every EU-bound shipment carries a signed Declaration of Conformity and its technical file.
Certifications, and which market each one unlocks
CE
European UnionEMC 2014/30/EU, Low Voltage 2014/35/EU and RoHS 2011/65/EU. Ships with a signed Declaration of Conformity and technical file — required for Amazon EU, retail chains and EU customs clearance.
RoHS
EU & UKRestricts lead, cadmium, mercury, hexavalent chromium, PBB and PBDE. Lab reports from SGS or Bureau Veritas for each material group, measured across ten substances to IEC 62321.
FDA
United StatesSilicone and ABS comply with FDA 21 CFR for skin-contact use, with MSDS for every component. Documentation satisfies Amazon US listing requirements.
IPX5 / IPX6 / IP7
Global — IEC 60529Water-jet protection (IPX5, and the stronger IPX6 (powerful water jet) on the AB0133 wand unit, the AB0160 rose-form unit, the AB0195 sculpted wand, the AB0196 dual-action insertable and the AB0198A swan wand) on the rinse-safe models and immersion protection (IP7 (immersion) on the AB0212A wearable, the AB0178 suction unit, the AB0128 pen unit, the AB0136 dual-head wearable, the AB0166 tongue wand, the AB0175 bendable wearable, the AB0176 lit rabbit insertable, the AB0186B telescoping insertable and the AB0199 peanut-waist insertable), each confirmed on every production batch rather than only the design sample. The rating system is defined by IEC 60529 — the IP Code (see the Wikipedia entry on the IP Code →).
UKCA
United KingdomPost-Brexit UK conformity assessment mark, with the required technical documentation prepared on request for eligible ranges.
FCC — not applicable here
United StatesFCC ID applies to our BLE app-controlled models only. The Slow Duo range is app-free, so no radio certification is required — and we do not claim one.
ISO 22716
Cosmetics GMPThe Good Manufacturing Practice standard for cosmetic and personal-care production — the quality-system framework behind intimate-wellness devices. Manufacturing runs under an ISO 22716-aligned regime with documented process control, batch traceability and cleanroom assembly, so the quality claims survive a buyer's own audit. The standard at iso.org →
We list only certifications we actually hold. Anything a market requires that we do not hold, we say so before you order. Request the document set →
You do not have to take our word for it
Every claim above is independently checkable. Buyers can instruct an accredited inspection body directly, or ask us for the documentation first.
SGS — material & substance testing
CNAS-accredited laboratory reports for silicone material safety to FDA 21 CFR, RoHS 10-substance analysis and REACH SVHC screening.
Bureau Veritas — CE verification
Independent review of our CE technical file and electrical safety testing to IEC 62368-1, accepted by Amazon EU compliance teams.
QIMA — pre-shipment inspection
AQL 2.5 / 4.0 sampling inspection at the factory before shipment, with the report returned within 24 hours. Buyers can book directly using the factory address; we charge no coordination fee.
Every material test report we issue is per SKU, from a named, CNAS-accredited laboratory (SGS), with the report number and the testing body you can verify against the EU's NANDO database of notified bodies — not a one-page template covering a generic material batch. That distinction is what clears customs rather than getting a shipment held.
We also provide full factory access for any accredited third party you prefer to appoint. Arrange an inspection →
The manufacturer these figures come from
Slow Duo is produced by our manufacturing partner in Dongguan, Guangdong, China — a facility founded in 2014 that runs tooling, assembly and quality control under one roof, with no subcontracting on core components. Capacity is 500,000+ units per month, staffed by 80+ people including 20+ dedicated QC. The in-house team launches 3–5 new market-ready models a month, and holds 30–45 days of critical component safety stock so a component shortage does not become your delay.
The facility sells wholesale and OEM only. It does not retail, and it does not compete with its clients' channels — which is the first question a serious buyer asks, and the reason a partnership here survives a range review.
Commercial terms — MOQ, sample and lead time, payment and market exclusivity — are set out on the wholesale page and the product page.
Milestones
- 2014Founded in Dongguan; first production line for personal-care devices.
- 2017CE and RoHS certification achieved.
- 2019Capacity expanded to 500,000 units per month under ISO-managed production.
- 2021BLE 5.0 app-controlled product line launched.
- 202312+ global brand partnerships across the US, EU, UK and Australia.
- 2024FDA compliance documentation added; exports reach 30+ markets.
What ships with your order
Every shipment
- CE Declaration of Conformity
- RoHS certificate and 10-substance lab report
- FDA material compliance statement
- MSDS for all skin-contact components
- per-model water-resistance batch test report
- Product specification sheet
- Commercial invoice and packing list
- Certificate of origin
On request — battery and freight
- UN38.3 air-freight test report
- IEC 62133-2 battery safety report
- DGM air-freight declaration
- Sea-freight identification certificate
- 1.2 m drop and stack test reports
- EU Battery Regulation 2023/1542 declaration
Documents are emailed to verified buyers within one business day. Request the documentation pack →
Engineering and compliance questions
What is the noise level of the Slow Duo range?
Motor noise is measured to IEC 60268 in free field at 30 cm, at maximum speed. Dual-motor models measure ≤58 dB(A), against our QC limit of ≤60 dB(A) applied to every unit; single-motor models run 45–55 dB. The consumer-electronics norm is below 65 dB(A), so the range sits comfortably under it.
Which certifications does the Slow Duo range hold?
CE (EMC 2014/30/EU, Low Voltage 2014/35/EU and RoHS 2011/65/EU), RoHS measured to IEC 62321, FDA material safety to 21 CFR 177.2600, and IPX5 / IPX6 / IP7 to IEC 60529, rated per model. UKCA is prepared on request. FCC applies only to BLE app-controlled models, which this range is not — so we do not claim it.
How is the silicone certified for EU and US import?
Silicone is tested to FDA 21 CFR 177.2600 by SGS with no extractable substances; phthalates are screened to REACH Annex XVII across six groups with a not-detected result; and restricted substances are measured to IEC 62321 across ten substances, all below the EU threshold. MSDS is supplied for every skin-contact component.
How is each production batch tested?
Four stages: IQC on incoming materials, IPQC at in-process milestones, FQC on 100% of finished units — IPX5 / IPX6 / IP7 (per model), motor noise, charging cycle, surface finish and packaging — and OQC with AQL 2.5 random sampling before shipment. The outgoing defect rate is held below 0.1%, and the batch record ships with the goods.
Can I verify the certificates, or have the factory inspected?
Yes. Third-party testing is available from SGS for material and substance analysis and from Bureau Veritas for CE technical-file review. For pre-shipment inspection, QIMA runs AQL 2.5 / 4.0 sampling at the factory with reports returned in 24 hours — you can book directly using the factory address, and we charge no coordination fee.
What documentation ships with an order?
Every shipment carries the CE Declaration of Conformity, RoHS certificate and 10-substance report, FDA compliance statement, MSDS, per-model water-resistance batch test report, specification sheet, commercial invoice, packing list and certificate of origin. Battery and freight documents — UN38.3, IEC 62133-2, the DGM air declaration and the sea-freight identification certificate — are available on request.
Want the evidence pack for your market?
Tell us the destination market and the models you are considering. We will send the specification sheet, test reports, certificates and the current batch record as a single pack — within 24 hours.
- Test standards and measured results for every claim
- Certificates, MSDS and per-model water-resistance batch reports
- Third-party inspection bookable directly
- Spec-to-order support on OEM and ODM programmes