MAXELL Bluetooth wireless headphones HD1 BASS USB-C

<b>Battery</b> Charging source: USB Type-C Battery type: Built-in battery Continuous audio playback time: 20 h <b>Headphones</b> Headphone sensitivity: 90 dB +/- 3 dB Impedance: 32 ? Headphone frequency: 20 - 20000 Hz <b>Packaging data</b> Package type: Box <b>Performance</b> Product colour: Black Wearing style: Head-band Oven control type: Buttons Microphone included: Yes Control unit type: On-ear control unit Product type: Wireless headphones <b>Ports & interfaces</b> Bluetooth: Yes Connectivity technology: Wireless Bluetooth version: 5.1