1. Magnetic Bluetooth handsfree has a Frequency response: 20Hz-20kHz

2. These Wireless headset has an Operating distance: Up to 10m (free space)

3. The Wireless handsfree has a Bluetooth profiles: A2DP, AVRCP, HSP, HFP

4. This Handsfree has Bluetooth version: V4.2

5. Bluetooth distance: 10 meters

6. Frequency range: 2.4GHz-2.48GHz

7. Standby time: Up to 50hrs

8. Battery: Built in lithium polymer battery

9.Talk/music playtime: Approximately 2-4 hours

10. Charging time: Approximately 1-2 hours

11. Frequency response: 20Hz-20kHz

12. Operational temperature: -10 to 50°C

13. Working Voltage: DC5V/130MA

14. Charging: Recharge able