Features
•  Bluetooth specification: V3.0+EDR
•  Bluetooth profiles supported: HSP, HFP, A2DP and AVRCP
•  Various calling features:
   -Last number redialed
   -Voice dialing
   -Call-rejection
   -Headphones with adjustable volume
•  Up to 11 hours of talking time
•  Up to 10 hours of music playing time
•  Up to 3 hours of charging time (USB 5V)
•  Up to 250 hours of standby time
•  Operation range by Bluetooth Class II-10M (33ft)
•  Compatible with Bluetooth-enabled mobile phone, laptop    and tablet PC
•  Great audio clarity and wearing comfort
•  Adjustable headband ensures a comfortable fit
•  Built-in voice instruction to inform you of operational mode
   change
•  Integrated command controls for romotely operating your    audio device

Specification
MICROPHONE
•  Directivity: Omni-Directional
•  Frequency Response: 100Hz~10KHz
•  Impedance: 2.2K OHM at 1 KHz
•  Sensitivity: 4.0x1.5mm/-50±2dB

HEADPHONE
•  Drive Unit: 40mm dia.
•  Impedance: 32 OHM / 1 KHz
•  Frequency Response: 20Hz~20KHz
•  Sensitivity: 93dB/nW±3dB
•  Maximum Input Power: 100MW