Mobile phone bluetooth handsfree carkit            
Bluetooth specification: Version 1.2 compliant            
Bluetooth profile supported: Headset and handsfree profiles            
Frequency range: 2.4 ghz spectrum            
Working distance range: 10 meters (class 2)            
Dsp: Full duplex transmission, noise suppression and echo cancellation.            
Charging time: Within 3 hours            
Talking time: Up to 10 hours            
Standby time: Up to 200 hours            
Rechargeable battery: Lithium ion, 3.6 v, 1100 mah installed            
Battery protection: Over charge and over discharge protection            
Input current: 350 ma (internal controlled)            
Input voltage: DC 5 v            
Speaker power: 2 w (max.)            
Speaker impedance: 8 ohm            
Sensitivity of microphone: -47 db