M728 Waterproof Rotating Suction Automatic Male Stroker

Model M728 mapped to a single supplier offer

This M728 rotating suction automatic stroker is mapped to Alibaba offer 1600982264047 from Shenzhen Everycom Technology Company Limited. The offer identifies the KRSJJ brand field, model M728 and a red-and-black product with a transparent lower chamber.

Supplier image permission is reported by the site owner. Written territory, duration, editing scope and other commercial-use evidence remain pending upload.

Match the transparent spiral chamber

The visible design uses a clear outer tube around a translucent internal sleeve with raised helical structures. The upper body is red with black textured grip panels and three illuminated-looking control buttons.

Reject substitutions with an opaque chamber, different button count, straight internal ribs, a fully black housing or a different collar geometry. Model number alone is not enough if the visual construction changes.

Rotation is a supplier claim to test

The page lists seven rotation modes and shows curved arrows around the transparent sleeve. Those graphics describe intended motion but do not prove rotation speed, torque, direction changes or behaviour under load.

Approve a sample only after observing every setting, stop response and mechanical sound. Record whether the sleeve rotates continuously, alternates direction or changes rhythm, and compare multiple units for consistency.

Suction needs a separate mode map

Alibaba also lists seven suction modes and illustrates airflow at the open end. Suction strength, pulse pattern, vent path and interaction with rotation are not documented in the public fields.

Build a control chart from the approved sample, including startup state, each press sequence and emergency stop. Do not infer that fourteen listed modes equal fourteen independent combinations.

Three controls should have verified functions

The exact image shows three buttons on the red housing. Their icons suggest power and separate function control, but the public page does not provide a model-specific manual that ties every icon to a confirmed action.

Request the English instruction leaflet and electrical specification. Verify long-press and short-press behaviour, memory, lockout, charging indication and whether any function can activate unexpectedly after charging.

Fully waterproof remains an unverified claim

The offer calls M728 fully waterproof, yet no IP rating or matching ingress test report was verified. A marketing phrase cannot establish safe immersion depth, duration or charging-port protection.

Until model-specific evidence and a sealed sample pass review, keep the unit, charging area and cable away from immersion. Publish a tested cleaning boundary before customers receive the product.

TPE is a marketplace declaration, not a complete composition

The material selector lists TPE. It does not separate the sleeve, transparent shell, grip panels, electronics housing, coatings, colourants or adhesives into component-level declarations.

Request composition, restricted-substance evidence and lubricant compatibility for the exact production lot. Avoid silicone-based lubricants unless written compatibility is confirmed; a water-based product is the cautious default for sample testing.

Check the listed size and weight on arrival

The supplier attributes list 248.5 by 80 millimetres and 735 grams. These figures need a measurement method, tolerance and confirmation that they describe the assembled product rather than packaging.

Measure overall length, widest body, entry diameter, usable internal depth and net weight. Fit guidance should be based on verified internal dimensions, not only the external shell.

Keep colour variants procurement-specific

The offer shows a red-and-black choice and a green choice. This listing uses the exact red-and-black hero, so the planned SKU must not be fulfilled with green units.

Require colour codes on quotation, carton and unit packaging. A supplier colour name should be supported by an approved photograph because lighting can shift the apparent red tone.

Battery and charging evidence is incomplete

The public page does not provide a reliable battery capacity, input rating, connector specification, charge time, runtime or lithium transport document for model M728.

Confirm every electrical field before sale. Inspect the included cable, port cover, heat during charging, low-battery behaviour and automatic shutoff, then retain the current SDS and transport test evidence for the shipped cell.

Cleaning must follow the actual sleeve design

The transparent chamber makes residue easier to see, but it does not establish that the sleeve can be removed or that liquid cannot reach the drive system. The public evidence does not show a complete disassembly sequence.

Use the approved manual to define what separates, what may be rinsed and what must only be wiped. Dry every channel completely before reassembly and inspect the sleeve for tears, clouding or trapped moisture.

Comfort guidance starts with low settings

Motorised rotation and suction can create more concentrated pressure than manual use. The user should apply compatible lubricant, begin at the lowest confirmed setting and stop immediately if there is pain, numbness, swelling, skin damage or unusual heat.

Do not use on injured or inflamed tissue, share the internal sleeve, or operate a damaged unit. Anyone with a relevant medical concern should seek qualified advice before use.

Set a repeatable sample inspection

Compare the sample with the exact supplier image, offer ID and M728 marking. Inspect chamber clarity, spiral geometry, collar fit, button alignment, grip bonding, seams, charging cover and included documentation.

Run every mode across multiple cycles, check noise and heat, look for lubricant leakage into the mechanism and photograph the approved configuration. Bulk units should match that signed sample.

Resolve the two-kilogram package entry

Alibaba lists an individual package of 30 by 12 by 12 centimetres and 2.0 kilograms gross weight, far above the listed 735-gram product weight. The gap may include accessories or may simply be a generic logistics field.

Weigh the packed sample and master carton. Confirm carton quantity, volumetric weight, discreet outer packing, instruction language, cable, spare parts and battery declaration before freight is booked.

Plan price from the observed ten-unit order

On 10 August 2026 the offer displayed EUR 15.53 for 10 to 499 pieces and a Portugal shipping estimate of EUR 157.37 for ten pieces. Product value plus that estimate equals EUR 312.67, or EUR 31.27 per unit before clearance, duty and tax.

EUR 69.99 is a planning retail price that includes room for inspection, discreet packing, battery handling and mechanism defects. Recalculate after a current quotation, verified packed weight, freight service, duty, tax, Incoterm and sample approval.

Frequently asked questions about M728

Is this the exact supplier product?

The hero and stored source images come from Alibaba offer 1600982264047 and are mapped to supplier model M728. Bulk units still require comparison with an approved sample.

How many settings does it have?

The supplier lists seven rotation modes and seven suction modes. Their sequence, combinations and strength remain pending model-specific testing and an approved manual.

Can the whole device be immersed?

Not on current evidence. The offer uses a fully waterproof claim, but a matching ingress report and tested cleaning boundary remain pending.

What material touches the body?

The marketplace selector says TPE, but component composition, restricted-substance documents and lubricant compatibility remain pending written confirmation.

Which colour will this SKU use?

The planned SKU is tied to the exact red-and-black supplier image. Green is a separate supplier choice and must not be substituted.

Is EUR 69.99 final?

No. It is a planning price pending a current quote, verified package data, freight, clearance, duty, tax, Incoterm, battery documents and sample approval.