Version Bluetooth: V4.1 Chipset: CSR8645 Support profiles: HFP, HSP, AVRCP A2DP Audio profiles: APTX Operating range: 10 m Music Time: About 5 h Talk time: 5 h Charging time: 1-2 h Reducing 9. Noise: CVC6.0 In standby mode: About 180 h Battery: 90 mAh Lithium-Ion Polymer Battery