Zalman ZM-HPS510, Bluetooth Headphone, Active Noise Cancellation, Wired/Wireess Mode, 20 hours Play Time

Model ZM-HPS510 Weight 230g ± 10% (Headphones Only Dimension 167.2(W)mm x 186.6(H)mm x 80.8(L)mm IOS SiRi Call Function Yes Package Headphones, Hard Case(Pouch), Charging Cable, 3.5mm Stereo Cable Speaker Driver Unit Type & Size Circular Dynamic Horn /Φ40mm Speaker Impedance 32Ω Speaker Speaker Distortion ≤5% Speaker Sensitivity 103±3dB Speaker Frequency Response 20~20KHZ Microphone Type Capacitor Microphone Microphone Sensitivity -40±2dB @1kHz 1Pa Microphone Directivity Omnidirectional Microphone Frequency Range (Hz) 100-10KHZ Battery Capacity 500mA Charging Voltage DC 4.75-5.25V Recharging Current & Time 300mA / 2 Hours Working Current 35mA(BT and ANC)/ 25mA(BT）10mA（ANC） Protocol HSP, HFP, A2DP, and AVRCP Audio Formats SBC, AAC ANC Effective Bandwidth 20-800HZ Call Time 15h Play Time 20h（70% volume with Pure Bluetooth） Temperature range - 20ºC to + 45ºC ANC Type Feedback noise reduction Noise Cancellation 22db±2