Material: ABSSize: 20 * 15 * 13mm; weight: 3.7gBluetooth version: 5.0; Bluetooth chip: bk3266;Battery capacity: 50mah; charging time: less than 2 hours;Call music time: 4 hours; standby time: 70 hoursSupport language: EnglishSupporting protocols: HFP, HSP, A2DP, AVRCP,Input charging standard: Micro USB, DC5V / 1aFrequency response: 20Hz-20KHzEffective distance: 10M
