COSLUS C20 Cordless Water Flosser — 300ML Tank, ADA-accepted, Multiple Pressure Modes

The COSLUS C20 is a cordless water flosser designed for effective interdental cleaning with an upgraded 300ml tank, multiple pressure modes, and long battery life.

Compact and travel-ready, the COSLUS C20 combines a larger reservoir, adjustable pressure settings, and interchangeable tips to make daily oral hygiene simpler and more adaptable. The unit’s waterproof construction and rechargeable battery mean you can use and rinse it with confidence, while the ADA Scientific Council–accepted design reflects COSLUS’s product testing and development focus.

How does the C20 remove food particles that brushing misses?

The C20 uses a high-frequency pulsed water stream to dislodge debris and reach between teeth and around braces or implants where brushes often can’t. Its ultra-fine dual-thread nozzle and 1400–1800 pulses per minute help the flow target hard-to-reach areas without abrasive contact.

• Dual-stream ultra-fine 0.3mm+0.3mm nozzle for focused water delivery
• 1,400–1,800 pulses per minute for consistent pressure
• Multiple detachable tips for braces, implants, and general interdental cleaning

What pressure and operation modes are available for sensitive gums?

The C20 offers several pressure settings and three operation modes so you can adapt the intensity to your comfort level. Beginners are advised to start on the gentlest setting to allow soft tissues to adjust before increasing intensity.

• Soft mode recommended for first-time users and sensitive gums
• Medium and strong modes for deeper cleaning preferences
• Simple mode switching on the ergonomic handle for quick adjustments

How long will the battery last and how easy is it to refill and travel with?

A single 3-hour charge provides up to 30 days of use under typical conditions, making the C20 highly travel-friendly. The 300ml tank is larger than many portable models, reducing refills during a session and simplifying packing for trips.

• Up to 30 days of use after a full charge; charges via USB cable (adapter not included)
• 300ml BPA-free tank doubles the capacity of older portable models
• Compact, lightweight body with non-slip grip—designed for home and travel

Is the C20 durable and easy to clean after use?

The C20 is rated IPX7 water-resistant, allowing you to rinse the device safely and even use it in wet environments like the shower. COSLUS designed the motor and internal components for multi-year use under normal conditions and included removable parts for straightforward cleaning.

• IPX7 waterproof rating for safe rinsing and shower use
• Removable 300ml tank and detachable tips for quick cleaning
• Motor and materials tested for multi-year durability in standard use

Who is this for: The COSLUS C20 suits anyone seeking a portable, user-friendly alternative to string floss—especially those with braces, bridges, or limited dexterity who need targeted water cleaning. It’s also a solid option for travelers who want a larger tank and extended battery life in a compact unit. If you prefer adjustable pressure, multiple tip options, and a waterproof design that’s easy to maintain, the C20 is built to meet those practical needs.