JVC HA-XP50BT-R XX, Wireless Headphones, Supra-aural, Foldable, Bass boost switch, Rotatable ear pads, Bluetooth 4.1, Up to 40 hours battery life, 40 mm Driver, Impedance: 32 Ohm, Frequency range: 20 - 20000 Hz, Weight: 214 g, Colour: Black/Red, Includes 1.2 m connection cable and USB charging cable