Water Flosser with 310ml Tank, 4 Nozzle Tips, 4 Pressure Settings, USB Rechargeable (Black) Large 310ml Water Tank: This water flosser features a spacious water reservoir that holds up to 310ml, allowing for extended usage before needing a refill. 4 Pressure Settings: Customize your flossing experience with 4 adjustable pressure settings, ranging from a gentle massage to a powerful jet stream. Versatile Nozzle Tips: Includes 4 interchangeable nozzle tips for different cleaning needs, such as standard, plaque removal, orthodontic, and periodontal pockets. Ergonomic Design: The sleek and ergonomic shape ensures a comfortable grip and easy operation during use. USB Rechargeable: Conveniently recharge the water flosser using the included USB cable for cord-free operation.