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- Welcome to our store！ - It Is An Honor To Meet You - Offering beautiful items to loved ones- Working voltage: 3.7V Working current: 1.8 a Charging current: 0.9a Working power: approximately 6.5w Charging voltage: 5V Charging power: approximately 5W The adapter needs to be 5v/1a Timed shutdown time of 5 minutes RF: 1mHz Battery capacity: 1800mAH Charging time: approximately hours (white light flashing during charging, fully charged light off) Usage time: Use continuously for about 8 minutes per set Product weight: 309g Product net weight: 152g Product size: 16.3 * 4.3 * 4.1cm Color box size: 20 * 9.5 * 5.5cm Box quantity: 40pcs Outer box size: 55.5 * 40.5 * 19.5cm Packing weight: 13.5kg