This portable water flosser is designed for easy and effective oral care. It comes with 4 nozzles and a 200ML water tank, and is USB rechargeable. The device is waterproof with an IPX7 rating, making it perfect for use in the bathroom. To use, simply fill the water tank, choose your desired mode (normal, soft, or pulse), and aim the nozzle at your teeth. The device is easy to clean and maintain, and the nozzles should be replaced every 3 months for optimal hygiene.