Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. specification: Item Type: Dental Oral Irrigator_x000D_Material: Plastic _x000D_Charging Voltage: 5 W_x000D_Adapter: DC5V_x000D_Water Storage Capacity :300 ml_x000D_Pressure Range :30-110psi_x000D_Pulse Frequency :1400-1800 times/min_x000D_Battery :1400mAh lithium battery (built-in)_x000D_Function: Clean gums, clean teeth, prevent tooth caries, effectively remove dental plaque, prevent gingivitis, reduce gingival bleeding_x000D_Characteristics: _x000D_1. High frequency pulse, strong power output, equipped with intelligent stability system, continuous constant force cleaning. Strong power, good endurance. The body is waterproof and not afraid of washing, easy to carry._x000D_2. Fully open design, easy to clean the water tank, special internal leakproof design._x000D_3. One charge can be used for one week._x000D__x000D_Recommended approach_x000D_1. Hold the main engine in an upright position with the tip of the nozzle facing the teeth._x000D_2. Please keep the equipment perpendicular to the cleaning part to obtain the best effect.The mouth is slightly open so that the water in the flushing inlet can be set aside.Press the switch button to start flushing. Features: 1Unique fully open design, easy to clean the water tank, deep cleaning and better care for your oral healthy. 2Can penetrate into the gaps between teeth to remove food residue, soft dirt and remove bad breath. Suitable for most people. 3Can deeply clean the braces and remove food residues near braces and brackets. Suitable for people with braces to use. 4Deep into the tooth gaps for precise cleaning, 300ml capacity of the water tank, high efficiency for cleaning. 5The whole machine starts with one button, three modes can be easily controlled to meet different needs of tooth cleaning. PackageList: 1 x Host 2 x Nozzle 1 x USB Cable 1 x Manual