o Bluetooth specification: V1.2 o Bluetooth frequency: 2.4GHz-2.48GHz o Output power: class 2 (-6dBm - +4dBm) o Receiver sensitivity: ≤-70dBm o Transmission rate: maximum 2MBPS o Transmission distance: 10m without obstacle o Charging time: 2 to 3 hours o Working time: 8 hours o Standby time: 200 hours o Pairing password:"0000" o Battery: rechargeable Lithium polymer battery, DC3.7V o Working temperature: -10 to +45°C o Storage temperature: -20 to +65°C