Product specification:<br />- Bluetooth compatible specifications: V4.1<br />- Operating frequency band: 2.4GHz-2.48GHz unlicensed ISM<br />band<br />- Output Power: Class 2 power Output｣ｬ up to 10 meters<br />- Support Profiles: HSP｣ｬ HFP1.5｣ｬ A2DP Profiles<br />- Support Multiple Paired Devices: Up to 8 devices<br />- Integrated with the SDP echo cancellation<br />- Battery status display on the phone (only support IOS<br />device)<br />- Battery: 61mAh (Rechargeable Lithium Polymer)｣ｬ 3.7V DC<br />- Talk time: around 8 hours<br />- Music play time: around 7 hours<br />- Standby time: up to 130 hours<br />- Charge time: less 2 hours<br />- Power Input Voltage: 5V<br />- Operating temperature range: -20  ~ + 70  <br />- Weight: 18g<br />- Size: 62*39*13mm<br /> <br />Package includes:<br />1 * Wireless Handsfree Headset<br />1 * Charging Cable<br />1 * user manual