JVC HA-S31BT-B Deep Bass Wireless On-ear Bluetooth Headphones Black

Listen wirelessly to your favorite music17 hours of wireless listening with built-in rechargeable batteryBass boost function for dynamic bass sound(on/off)Voice-assistant compatibleSwivel designIntegrated remote & mic for smartphones located on headphones Transmission Area Approx. 10mDriver Unit 30.7mmMagnet type FerriteFrequency Response 20-20,000HzNominal Impedance 32ohmsPower Supply Rechargeable batteryBattery Life/Charging time (approx.) 17h/3.0h(Charging time)Weight (with cord) 158g4 button operation power,MFB, volume +/-Bluetooth version 4.1 (class2)Bluetooth profile A2DP, AVRCP, HFP,HSPSupporting codec SBCAccessory Charging cable(Micro USB)