Main features: 1) Standard: Bluetooth 1.2 specification 2) Color: white and black or silver with the exchange cover 3) Range: up to 30 feet (10m) 4) Audio code: single audio 5) Frequency: 2.4GHz ISM band 6) Bluetooth profiles supported: handsfree 1.0 and headset 1.1 7) Transmitter power: Class 2 8) Connection: point to point 9) Weight: 14 grams 10) Figure size: (L) 71 x (W) 23 x (H) 24mm 11) Talk time: 4 to 6 hours 12) Standby time: up to 180 hours 13) Output power: 800mAh 14) Security: security encrypted 15) Power consumption: 30mAh (working), 1mAh (standby) 16) Battery: 120mAh lithium-polymer battery, inserted 17) Charging time: about 2 hours 18) Operating temperature: -10 degrees to 45 degrees. 19) Charging temperature: 0 degrees to 45 degrees 20) Certification: CE FCC and BQB approved 21) Others: automatic reconnection at power on and disconnection at power off Inner packing: Box dimensions (L x W x H): 14.5 x 11 x 5.5mm Outer packing: 50pcs/ctn, 100pcs/ctn Carton dimensions (L x W x H): 400 x 265 x 410mm, 530 x 400 x 410mm