Product property: neutral, OEM OEM can be used Product Name: TWS Bluetooth headset Product model: es02 Product material: ABS + electronic components + lithium battery; sticking skin and cloth technology, gold deposition process Power mode: USB Master control scheme: master slave switching of China Science blue technology 8832a (bluetrum technology 8832a) 5.0 Supporting protocols: hsp1.2, hfp1.6, a2dp1.3, avrcp1.5 Sensitivity: ≥ 90dB Working frequency: 20-20KHz Working voltage: 5V / 50mA for earphone; 5V / 1.5A for charging box Charging time: 1 hour Working time: 4-5 hours Standby time: 200 hours (used with charging bin) Working distance: more than 10m Single ear battery capacity: 50mah Battery capacity: 600mah Charge the headset 4-5 times Main functions of the product: · support Bluetooth headset to play music, support music to cut songs, support terminal redial, power display, call voice number reporting function, Bluetooth headset operation voice prompt function, suitable for smart phones with Bluetooth function / notebook, computer, tablet computer with Bluetooth module, etc Including accessories: 1 charging cable, 1 pair of large, medium and small earcaps, 1 instruction manual, 2 headphones, 1 charging bin, 1 e-commerce gift box