AIAIAI TMA-2 HD Wireless, Bluetooth Headphones, Closed, Playback time: Up to 16 hours, Range: Up to 10 metres, Circumaural, Also works with any cable of the TMA-2 modular series, S05 Detailed Speaker Elements, 40 mm Driver, Frequency range: 20 - 20,000 Hz, Maximum power: 100 mW, Sound pressure level: 113 dB, Impedance: 32 Ohm, E08 over-ear Alcantara memory foam ear pads, H05 Bluetooth headband with Bluetooth 4.2, Codec: AptX, AptX HD, AAC and SBC, Supports high res audio with 48 kHz / 24 bit LPCM, Buttons for play, pause, skip, volume and answer calls, Built-in omnidirectional microphone for phone calls, Frequency range microphone: 300 - 5000 Hz, 360 mAh battery, Charging time: approx. 2 hours, USB-C connection, USB-C charging cable included