Bluetooth 1.2compliant Range:up to 30 feet (10 metres) Frequency :2.4GHZ ISM Band Transmitter Power :Class 2 Connection:Point to point Weight:14 grams Figure size:71mm*23.5mm*24mm Talk time: 4 to 6 hours Standby time: up to 180 hours Output power: 800 mah Security Encrypt Power consumption:30mah (working) 1mah(standby) Battery:120mah lithium-polymer battery inserted Charging time:About 2 hours Certification:CE FCC and BQB approved Packing info 50pcs/ctn Carton size:40*26.5*41cm