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Product Name: 5-speed ultrasonic dental cleaner Model: H02090 Power: 3w Working voltage: 3.7V Battery capacity: 500mAh Charging time: approximately 2 hours Usage time: approximately 60 minutes Auxiliary lighting: High brightness LED lights Waterproof level: Domestic waterproof level 5 Host size/weight: 2.5 * 17.6cm, 80g Packaging size/weight: 19x7.8x3.7cm, 191g Packing specifications: 39.5x38x32cm, 80 sets, 16.5kg Packaging list: 1 main unit, 2 working tips, 1 small wrench, 1 charging cable, 1 instruction manual in English and Russian, and 1 cover box in English Product features: 1. Clean without damaging teeth, simple and easy to operate, with built-in LED lighting 2. High quality stainless steel work head, can be easily disassembled for needle cleaning (Automatically stops every ten minutes of operation to prevent overheating of the work tip. Simply cool it down or wait for 60 seconds before turning it on.) 3. 5-speed cleaning mode 4. Ultrasonic vibration 5. The US Type C charging port does not require battery replacement, making it easy to carry 6. Start ultrasonic resonance cleaning when in contact with teeth, stop working when in contact with gums, and safely protect gums