How to Use 1. Press the power button to start the machine, the default start mode is weak mode, that is, soft mode, the corresponding indicator light is on. 2. Press and hold for 2 seconds to switch the mode, the mode switches to the strong gear, that is, the normal mode, and the indicator light also switches to the corresponding indicator light. 3. Long press for 2 seconds to switch to pulse mode, that is, pulse mode, the indicator light also switches to the corresponding indicator light cycle in turn. 4. Charging: Please use the supporting USB cable to charge the machine. When the machine is charging, the 3 indicator lights will flash in sequence. After fully charged, the indicator light will always be on. Use suggestions: It is recommended to start with the lowest gear and gradually find the most suitable gear. When cleaning the teeth, put the nozzle in the mouth, aim at the gap between the teeth, and gently open the mouth so that the water can flow out smoothly. Specification Name: Electric Water Flosser Color:White/Pink/Green Material: ABS Size: 8.3 * 2.3 inch (21 * 5.8 cm) Waterproof: IPX7 waterproof Battery: 1200 mAh (Rechargeable) Tank Capacity: 220 ml Package Included 1 * Electric Water Flosser 4 * Jet Tip?Portable Design for Travel?Cordless and lightweight, this portable water flosser is ideal for travel. And our support team is available to help with any product questions or needs. ?Waterproof & Portable Design?Enjoy the convenience of cordless water flossing, waterproof design, lightweight and large capacity for use in the shower. ?Rechargeable & Long Battery Lifetime?1200mAh powerful and environmental lithium battery with the latest technology, fully charged need 4 hours and used continuously for about 30 days. Come with USB Cable (Adapter Not Included), applicable to a variety of charging devices such as power bank, computer, laptop etc. ?3 Working Modes & Customize Water Pressure?Weak, Strong and Pulse modes to meet various oral care needs, and the 3 mode allows you to customize the water pressure in the range 30-80psi that suits your teeth best and you just need press and hold for 2 second to switch modes. Upgraded unique pulsation technique, can effectively remove 99.99% food residue and plaque, massage the gum and promoting blood circulation. Also helpful for bleeding gums, bad breath, good for brace and bridge care. ?220ML Detachable Water Tank & 4 Multifunctional Nozzles? The upgraded removable full-opening water tank allows you to thoroughly clean the limescale and dental plaque, which is impossible for common oral irrigators. The 360° rotatable nozzle design allows you to easily clean the areas that are difficult to reach and prevents debris and dental plaque.