# COSLUS E40 Cordless Water Flosser, 10 Pressure Settings

The COSLUS E40 water flosser is a battery-powered oral irrigator with 10 adjustable pressure settings and standard and massage modes. Its 300 ml tank and cordless design suit home use and travel, while customer feedback is mixed on water capacity.

- [Original product page](https://loonieperks.com/product/coslus-e40-cordless-water-flosser)
- [View offer](https://loonieperks.com/visit/coslus-e40-cordless-water-flosser)
- Market: CA
- Language: en-CA
- Currency: CAD
- Brand: COSLUS
- Model: E40
- Category: Beauty & Health > Personal Care Appliances > Electric Toothbrushes
- Price: 44.98 CAD
- Previous price: 49.99 CAD
- Discount: 10%
- Price checked: 2026-11-12T20:34:35.253Z
- Rating: 4.4 / 5
- Reviews: 5823

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Ten pressure levels provide options for adjusting the water stream to personal comfort.
- Standard and massage modes offer two stated cleaning choices.
- The listed 300 ml reservoir may reduce the need to refill during a cleaning session, though customer feedback on capacity is mixed.
- Cordless battery power and a travel-oriented design are presented as convenient for use away from home.

## Pros

- Pressure adjustment offers a range of settings rather than a single fixed intensity.
- The 300 ml tank provides a substantial stated reservoir for a portable flosser.
- Customer feedback describes the device as easy to use, with useful cleaning performance and long-lasting charge.

## Specifications

### Identity
- Brand: COSLUS
- Model: E40
- Colour: Deep Black
- Target area: Teeth
- Product benefits: Deep Cleansing, Gentle Cleaning, Irrigators
- Special features: Multiple Operation Modes, Multiple Pressure Settings, Multiple Tips, Non-Slip Grip, Portable
### Cleaning and water
- Pressure settings: 10 adjustable pressure levels
- Cleaning modes: standard mode and massage mode
- Tank volume: 300 ml
- Material: Plastic
### Power and battery
- Power configuration: Battery Powered
- Battery: 1 Lithium Polymer batteries required. \(included\)
### Dimensions and compliance
- Dimensions listed: 23.8 x 8.5 x 6 centimetres
- Specification met: FCC

## Before you buy

- The listing describes a 30-day battery life and fast USB charging, but provides no test conditions or usage pattern for the battery estimate. The adapter is stated to be excluded, and the charging port or cable details are not specified. The listing also uses both stepless control and 10 pressure levels, and gives differing warranty terms of one and two years. Customer opinions on tank capacity are mixed, so the 300 ml figure does not establish that every user can complete a session without refilling.

## A good fit for

- Travellers wanting a cordless water flosser with a stated 300 ml tank.
- Buyers who want to adjust water pressure across multiple levels.
- People looking for separate standard and massage cleaning modes.

## Less suited to

- Buyers who require a clearly specified charging adapter in the box.
- Anyone who needs confirmed warranty duration or a substantiated battery-life estimate before purchase.

## Customer feedback

Customer feedback reports positive impressions of ease of use, cleaning performance, pressure and battery life. Buyers seeking fewer charging interruptions may value those reports, while opinions on water capacity are mixed. The overall rating distribution is mostly positive but includes a meaningful range of lower ratings, and ratings alone do not explain their causes.
- Positive themes: Customers describe it as easy to use and report useful cleaning performance.
- Positive themes: Feedback praises battery life, water pressure and power.
- Mixed feedback: Customers have mixed opinions about water capacity.

## Frequently asked questions

### How many pressure settings does the E40 have?
The listing states 10 pressure levels and also describes a stepless speed dial. It does not specify the pressure values.
### What modes are listed?
The product description names standard mode and massage mode.
### Is the charging adapter included?
No. The listing says the adapter is not included and that a 5V adapter can be used.
### How long does the battery last?
The listing claims up to 30 days per charge, but does not provide the usage conditions behind that estimate.

## Alternative options

- [AquaSonic Aqua Flosser Water Flosser, ADA Accepted, White \| Clinically Studied, Cordless, 5 Jet Tips, 3 Modes, 360° Rotating Tips, Waterproof, Rechargeable, Travel Bag, Braces Care](https://loonieperks.com/visit/coslus-e40-cordless-water-flosser)
- [COSLUS C50 Water Flosser for Teeth, 4 Modes & 5 Intensities, Blue \| Water Dental Pick for Orthodontic, Braces & Gums Care - Portable for Travel, 4 Tips for Family Use](https://loonieperks.com/visit/coslus-e40-cordless-water-flosser)
- [COSLUS C30 Water Portable Flosser for Teeth, 4 Modes and DIY Settings,Black \| 300ML Larger Tank, Cordless, Electric, Rechargeable, Deep Teeth Cleaning, Family Use, Home, Travel, IPX7 Waterproof](https://loonieperks.com/visit/coslus-e40-cordless-water-flosser)
- [COSLUS C20 Portable Water Teeth Flosser, 300ML Larger Tank, Light-Pink 1Pcs \| Cordless Water Electric Flossing, Rechargeable Portable Flossers for Travel, Multiple Modes for Home Family Daliy Use, IPX7](https://loonieperks.com/visit/coslus-e40-cordless-water-flosser)
- [Waterpik Cordless Pulse 3100 Portable Water Flosser, Rechargeable, White \| 2 Settings, 1 Precision Tip & 1 Tongue Cleaner Tip for Fresh Breath, Travel, Shower Use, ADA Accepted, WF-20 Amazon Exclusive](https://loonieperks.com/visit/coslus-e40-cordless-water-flosser)
- [COSLUS C51 Portable Water Teeth Flosser with 3 Modes & 6 Pressure, Black \| for Whole Family Various Cleaning Need, Jet Mode for Beginner-Friendly, Compact for Travel Office, 300ml Tank IPX7 Waterproof](https://loonieperks.com/visit/coslus-e40-cordless-water-flosser)
- [COSLUS C51 Portable Water Teeth Flosser with 3 Modes & 6 Pressure, White \| for Whole Family Various Cleaning Need, Jet Mode for Beginner-Friendly, Compact for Travel Office, 300ml Tank IPX7 Waterproof](https://loonieperks.com/visit/coslus-e40-cordless-water-flosser)
- [COSLUS C20 Portable Water Teeth Flosser, 300ML Larger Tank, White 1Pcs \| Cordless Water Electric Flossing, Rechargeable Portable Flossers for Travel, Multiple Modes for Home Family Daliy Use, IPX7](https://loonieperks.com/visit/coslus-e40-cordless-water-flosser)
- [MySmile LP221 Self Cleaning OLED Display Cordless Water Flossers for Teeth \| 335ML 4 Modes Water Jet Dental Picks for Teeth Cleaning, Water Flossing, Gum & Braces Care, Home & Travel Use, Pearl White](https://loonieperks.com/visit/coslus-e40-cordless-water-flosser)
- [COSLUS C50 Water Flosser for Teeth, 4 Modes & 5 Intensities, Black \| Water Dental Pick for Orthodontic, Braces & Gums Care - Portable for Travel, 4 Tips for Family Use](https://loonieperks.com/visit/coslus-e40-cordless-water-flosser)

## Add-ons

- [COSLUS E40 Water Portable Teeth Flosser, 10 Precise Pressure Settings Black \| Advanced Electric Flosser for Tooth Cleaning, M](https://loonieperks.com/visit/coslus-e40-cordless-water-flosser)

## Images

![COSLUS E40 Cordless Water Flosser, 10 Pressure Settings — 1](https://loonieperks.com/i/WxSpFgNcw49n795myS5hGg40NK_NOeKyjr42yBZV4QPjdy0EJx3yPEgotHMpCjhKE1H6dgJJ1z91YnzqqwIGZCh3P5c0TyxqKlL4hNFcHiSB9uiXqmSJd4VK.jpg)

![COSLUS E40 Cordless Water Flosser, 10 Pressure Settings — 2](https://loonieperks.com/i/FDzBiEF1r-59_iVaZAL110iilSNDnZJsmDBNkSwYiSZQTaGmbFgcn5T475IyxqEKNaJ9n7ZDwL26ue68nXRvNo5JABHGyY0FV5_npJRqaKczeh0Q4eUDfMae.jpg)

![COSLUS E40 Cordless Water Flosser, 10 Pressure Settings — 3](https://loonieperks.com/i/4JDNE0PZCpsYTpp74fgVXTEimDRlII2jOqIOc4N-lUVast6pO_76hUu8E-gjBEyU_ysbgN2TEPz-NiB5xgSh7pBxvuuOgtth3nGHJW1tEpIGPR2JjjLxOASK.jpg)

![COSLUS E40 Cordless Water Flosser, 10 Pressure Settings — 4](https://loonieperks.com/i/rxUTyRYoSZKoUqu7nsYN0SvT3iUcVjMzWkdwxR0uDgepqKm6XiRAVGFyq-kiejU-arGRzGDb6Jk7BpTdWe4Ojn0b6KNzbEeEmrtSLSy0B5jeUNTP3769o8B5.jpg)

![COSLUS E40 Cordless Water Flosser, 10 Pressure Settings — 5](https://loonieperks.com/i/GLsll-F1mcmPezsGQ_g1GY711h59lf5DyEeI7fHGWWe-HqE91iyuhdk9pPOURNTlc6G4YF38OGP5NHUrJO5OXOFJaMEc6MFbmVntw5nZg2AKi0ZMh6TiD9z6.jpg)

![COSLUS E40 Cordless Water Flosser, 10 Pressure Settings — 6](https://loonieperks.com/i/FBiHo_272sJtMq6tYEqMRJDl3fjf4Abm7RThTEKaYVJx85Dwogu49l1Bh9wk-x2Uo07mICVr4M0TcHu3KT8S08cl1pH66rwnwUz1o-MmUdj89PranIHjiJSy.jpg)

![COSLUS E40 Cordless Water Flosser, 10 Pressure Settings — 7](https://loonieperks.com/i/h9u1tddde61sOuim9e0w11oXaY-lLuccThsD7qmb2nzWyBRcAkDYKTtEen6_9zsjmNvb90ksFIY1TKAsgrJQmzdlUFQYwpCh07OKDp2wzII4CahobdnkutOt.jpg)