Chip: ISSC-2020-203 Bluetooth version: 4.1 standby time: 280-300H Battery capacity: 120mAh Transmission distance: 10m charging Interface: Micro-UBS call time: 9-10H charging voltage: DC 5V one-tow two-function incoming calls, reject, hang up, voice control music playback, Volume control, last number redial / down control Chinese and English to switch call voice number
