Features:     
1.Caller Name or Caller Number LCD Display.     
2.Phone Book Synchronization Function     
3.Advanced Built-in Microphone and Speaker     
4.Echo Cancellation & Noise Suppression,Full Duplex Sound Quality     
5.One-Touch Answer, Call Rejection, Last Number Redial.     
6.Compatible Bluetooth Specification: V2.0+EDR     
7.Operating Frequency Band: 2.4GHz~2.48GHz Unlicensed ISM     
8.Working Distance: Up to 10 Meters     
9.Support Profiles: Headset and Hands free Profiles     
10.Battery Type: Rechargeable Lithium DC3.7V, 600maH (BL-5B)     
11.Talk Time: 15~16 hours     
12.Standby Time: 600 hours     
13.Charging Time: 2~3 hours