Valco VMK15-H, Wireless Headphones, Active Noise Cancelling (ANC), Supra-aural, Closed-back design, Dynamic, Bluetooth: 5.3, Codecs: APTX, SBC, AAC, Qualcomm QCC30XX Bluetooth chip, Frequency range: 20 - 15,000 Hz, Impedance: 32 ohm, Driver size: 40 mm, Wired use possible, 3.5 mm stereo mini jack cable, 140 cm long, Hands-free function (built-in microphone) with CVC8 noise cancelling, Battery life: Up to 55 hours with ANC activated, 95 hours with phone use, Charging time: 2 - 3 hours, Weight: 200 g, Colour: White, Includes a 3.5 mm aux cable, USB-C charger cable, aircraft adapter and case