Be the first to purchase these amazing  sounding bluetooth headphones. 
Bluetooth version: v4.1
Sensativity: 102+/-3dB
Frequency Response: 20-20KHZ
Chip: CSR
Bluetooth Profiles: A2DP/AVRCP/HSP/HFP
Drive Unit: Ø40mm
Speaker Impedence: 32 OHM
Connector: USB
Charging Time:1-2H
Standby Time: 300H
Weight: 162g
Operation Range: 30 feet
Battery Capacity: 250mAH
Music Play Time: 8-10H
Talking Time: 8-10H