Bluetooth Version Bluetooth 4.0 Run Time (Up To) 20 hour(s) Rechargeable Battery rechargeable Recharge Time 2 hour(s) HEADPHONES Headphones Form Factor Circumaural Connectivity Technology Wireless - Bluetooth Sound Output Mode stereo Frequency Response 20 Hz Impedance 32 Ohm Diaphragm 2 in Bluetooth Version Bluetooth 4.0 MICROPHONE Type On-cable REMOTE CONTROL Audio Controls remote control Controls Remote control POWER Run Time (Up To) 20 hour(s) BATTERY Rechargeable Battery rechargeable Recharge Time 2 hour(s) Brand JBL SKU JB523EL0OD3M8NAFAMZ-27420 Storage Capacity 0 Model E55