Behringer BB 560M - Bluetooth wireless headphones with microphone

Battery recharge time: 2 -3 h | USB connector: USB | Microphone type: Built-in | Product type: Wireless headphones | Battery type: Built-in battery | Ear coupling: Circumaural | Battery operated: Yes | Product colour: Black | Bluetooth: Yes | Headphone frequency: 100 - 20000 Hz | Headphone frequency: 20 - 20000 Hz | Recommended usage: Gaming, broadcasts, podcasts | Connectivity technology: Wireless | Continuous audio playback time: 7 h | Bluetooth version: 5.0 | Battery technology: Lithium-Ion (Li-Ion) | USB connectivity: Yes | Acoustic system: Closed | Wearing style: Head-band | Headset type: Binaural