1. Compatible Bluetooth Specification(CSR): V4.1+A2DP 
2. Operating Frequency Band: 2.4GHz ~ 2.48GHz unlicensed ISM band 
3. Class 2 Output Power up to 10 meters 
4. Support Headset and HandsFree, profiles 
5. Support Multiple paired,allows a speakerphone connect to two phones. 
     (Memory Up to 8 Bluetooth Phone paired) 
6. Integrated with echo cancellation and Noise suppressor 
7. Built in speaker and microphone 
8. Battery type: Rechargeable Lithium DC 3.7V, 650maH (BL-5B) 
9. Talk time: up to 15~16hours 
10. Standby time: up to 1000 hours 
      Charger time: 2~3hours