Bluetooth Version v4.1
Bluetooth Profile HSP, HFP, A2DP, AVRCP 
Bluetooth Chipset CSR8635 
ANC Chipset ANC-662
Noise Reduction 20-24DB
Input 5V, 0.5A
Impedance 32Ω
Speaker Frequency 20Hz-20KHz
Charging Time 2-3 Hours
Playing Time 12-20 Hours  
Standby Time 50 Hours
Battery Capacity 520mAh