GM-408 Dual-Motor Open-Clamshell Masturbator

An open clamshell changes the usual sleeve format

GM-408 uses two curved shell halves joined around a central passage instead of hiding a full sleeve inside a tall canister. Red flexible contact rails run around the opening, while the black or white outer panels provide the grip. Every image comes from the exact GM-408 supplier offer.

Black and White are real supplier choices

The verified colour selector offers Black and White. Both retain the same red contact rails and inner texture. Each colour is published as a stock-managed variation with 100 preview units, producing a combined stock of 200.

Two motors are positioned on opposite shell halves

The exact cutaway graphic places one motor in each side and labels the product as having two separate motors. This symmetrical layout is intended to transmit vibration from both sides of the open passage; motor speed, amplitude and frequency values are not published.

The supplier graphic declares ten vibration frequencies

A single power button appears on the shell. Another exact offer image instructs a long press of about 1.5 seconds for power and a short press for mode changes. The ten-mode claim is retained as a supplier declaration pending sample testing.

The contact area combines rails, ribs and raised points

The red inner surface includes a ribbed central patch surrounded by small raised points. Broad red rails frame the opening and keep the black or white shell away from direct contact. Texture firmness and compression range require physical inspection.

The published footprint is compact

The offer lists the product at 12.2 by 10.4 cm and 186.5 g. A charging graphic instead marks 122 by 140 mm, creating a dimension conflict. The exact length, width, thickness and usable opening must therefore be measured on approved samples.

USB charging is shown, but power details are incomplete

The supplier depicts a USB cable connected to the device and shows example power sources. Battery chemistry, capacity, charging voltage and current, connector type, charge time, run time, low-battery indication and charger inclusion are not stated.

Waterproof wording still needs test evidence

The offer says 100% waterproof, but it does not identify an IP rating, immersion depth, duration or accredited report. Treat the claim as pending. Keep the charging connection dry and disconnected before cleaning until written instructions are supplied.

Material labels are ABS and thermoplastic elastomer

The selector lists ABS and TPE. It does not identify which component uses each material, TPE grade, plasticiser system, restricted-substance results or skin-contact testing. Exact composition and compliance documents remain pending.

Begin with low pressure and short sessions

Apply a compatible water-based lubricant to the contact surface, start at the lowest setting and avoid compressing the shell beyond a comfortable range. Stop immediately if there is sharp pain, numbness, loss of colour, swelling or broken skin.

Cleaning depends on seam and charging-port design

The open architecture may improve access to the contact surfaces, but gaps between the rails and shell still need inspection. Wash only according to the final supplier instructions, keep electrical interfaces protected and allow the product to dry fully before storage.

Do not share without a hygiene barrier

Personal-use products should be assigned to one user. If sharing is unavoidable, use a new compatible barrier for each person and each session, and clean the contact surfaces according to validated instructions.

Gift-box wording does not confirm the accessory list

The supplier states gift-box packing but does not publish a signed contents list. Confirm the device, charging cable, instructions, storage component, packaging language and any spare parts before bulk order.

Procurement stays tied to GM-408

Supplier: Zhuzhou Senai Technology Co., Ltd.; model GM-408; offer 1601535124874. At the planned 200-piece quantity the visible reference tier is EUR 8.32 each, with Black and White as the only verified colour choices.

The EUR 34.99 price is provisional

The plan reserves room for China-to-Portugal freight, clearance, duty and VAT where applicable, dual-motor and charging checks, waterproof inspection, discreet packing, payment cost and defects. It is not a confirmed landed cost because no 200-piece freight solution is displayed.

Frequently asked questions

Are these the exact supplier images?

Yes. The product, colour and feature images are linked to the exact GM-408 offer and are not regenerated or recoloured.

Which colours can I choose?

Black or White, each with red contact rails and 100 preview units.

Does it have ten modes?

The exact supplier graphic declares ten vibration frequencies. Independent mode and intensity testing remains pending.

Can it be submerged?

No immersion promise is made until the supplier provides a defined waterproof rating and test report.

What is the usable opening size?

That measurement is not published reliably and must be taken from samples.

What comes in the box?

Gift-box packing is stated, but the final accessory and cable list requires written confirmation.

Release requires electrical, material and fit checks

Approve the physical dimensions, opening range, mode map, vibration output, sound, battery and charging specification, waterproof evidence, ABS and TPE declarations, cleaning method, accessory list, conformity files, warranty, carton data and landed-cost quote. Anonymous purchasing remains disabled while those points are open.