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Black cordless water flosser with 300ml tank and nozzle

COSLUS W40 Whitening Flosser 300ML oral care

SKU CH-27CS-ZMMF2 MPN W40

A cordless water flosser with a 300 millilitre tank, multiple pressure settings and IPX7 waterproofing for up to 30 days of use per charge

  • Rated speed1. Fill the water tank with water, 2. Select the desired wat
  • Bristle typeDeep Cleaning, 1. Fill the water tank with water, 2. Select
  • Timer and extrasLightweight
  • Tank capacity300 milliliters
  • Power typeBattery Powered
  • Rechargeable batteryMultiple Pressure Settings
  • ADA accepted flosser meets professional oral-care standards
  • Three pressure modes adapt cleaning to sensitive or deep-clean needs
  • 300 ml tank lasts a full session without refilling
  • IPX7 waterproof build allows safe shower use and easy rinsing
  • 30-day battery life from one 3-hour charge supports travel

ADA-Accepted Cordless Oral Irrigator

The COSLUS W40 is an ADA-accepted water flosser designed for daily oral hygiene. It uses a pressurised water stream to clean between teeth and along the gum line. The device operates cordlessly and features an IPX7 waterproof rating for safe use in wet environments. A 300 ml tank supports extended cleaning sessions without refilling.

Users Seeking Adjustable Pressure and Portability

This flosser suits people who want multiple pressure settings to match personal sensitivity or cleaning intensity. Its rechargeable battery delivers up to 30 days of use per charge, making it practical for travel and home bathrooms alike. Buyers who need a countertop unit with a larger reservoir or continuous mains power should consider a different category of device.

300 Millilitre Removable Water Tank

The 300 ml capacity determines how long you can floss before adding more water. It is larger than the 150 ml and 180 ml tanks found on compact models in the same range. This volume directly affects session length and refill frequency for the user.

How it compares

Measured against everything we stock in Dental Care & Oral Hygiene, at today’s prices. Recalculated every night.

Price $46.99
Pricier than about 84% of the 2,485 comparable items (median $20.99).

Specifications

Product
Brand nameCOSLUS
Model nameC20
Part numberC20
Product colorBlack
Power
Power typeBattery Powered
Rechargeable batteryMultiple Pressure Settings
Battery indicatorMultiple Pressure Settings
Size & build
Tank capacity300 milliliters
CompositionPlastic
Product dimensions7.112 cm × 9.8044 cm × 23.5966 cm
Product weight0.449 kg
In the box
Accessories includedPortable, Rechargeable
More details
Team affiliation1 Piece

Questions about this item

What clearance does the 7.112 cm by 9.8044 cm base need on a bathroom shelf?

The unit measures 7.112 cm wide by 9.8044 cm deep by 23.5966 cm high, so allow at least that footprint plus room for the flip‑open tank lid.

Which step do users most often skip when setting up the W40 for the first time?

Fully charge the battery for three hours before first use; the indicator shows multiple pressure settings when ready.

How often should the nozzle tips be replaced on this flosser?

Replace each tip every three to six months, or sooner if the stream weakens or the tip shows wear.

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