bluetooth handset
1.Connect to the mobile phone (Also computer)to avoid radiation 2.Transmission: Wireless

Technical specifications:
Bluetooth version: V1.2
Transmit power: Class2
Support Protocol: Bluetooth headset, hands-free,
Transmission: Wireless
Transmission range: 8-10 meters
Center frequency: 2441.00MHz
Frequency range: 2400.00-2483.50MHz
Operating temperature: -20 - 60 °C
                 

Power Specifications:
Battery: Rechargeable lithium battery (3.7V, 220mAh, 602025)
Charger: 5.0-5.3v / 100-450mA
Standby time: 5 days
Talk time: 24 hours
Charging time: 4 hours

Physical Specifications (CM):
Packing box: 23.5 * 12 * 8
Bluetooth Microphone: 21.5 * 6.2 * 4.5  hands-free pop bluetooth handset for mobile