Compatible Bluetooth Specification V2. 0+EDR
Operating Frequency Band: 2. 4GHz ~ 2. 48GHz unlicensed ISM band
Class 2 Output Power up to 10 meters
Support Headset and HandsFree profiles
Integrated with echo cancellation and Noise suppressor
Built in speaker and microphone
Battery type: Rechargeable Lithium DC 3. 7V, 820maH (BL-5B)
Talk time: up to 10hours
Standby time: up to 480hours
Charger time: 2~3hours
Size: 115. 5mm(L) x 45mm(W) x 15mm(H)