Bluetooth specification: Bluetooth V4.1
Operation frequency: 2.402-2.480GHz
Supported profile: HFPv1.6, HSPv1.2, A2DPv1.2, AVRCPv1.4
Chip solution: CSR
Operating range: up to 10 meters, class II
Talking time: about 5 hours (max volume)
Music time: about 4 hours (max volume)
Battery type: 3.7V, >65mAh, Lithium polymer battery
Charge time: about 1.5 hours
Operating temperature: -10-55℃