If you're passionate about IT and electronics, like being up to date on technology and don't miss even the slightest details, buy  Headphones with Headband Denver Electronics BTH-240  at an unbeatable price.
Rechargeable battery: 300 mAh
Range: 10 m
Frequency response: 20Hz - 20kHz
Connectivity: 
Bluetooth 5.0
Bluetooth
With and without cables
Approx. playback battery life: 20 hours
Type: Headphones with Microphone
Colour: 
White
Black
Characteristics: 
On/off interrupter
Built-in microphone
Wireless
Connections: 
USB
Wireless
Type of headphones: External supraaural
Shape: Box
Connection: USB
Battery type: Without batteries
Switch: On/off button
Connector: 3,5 mm
Rechargeable lithium battery: 300 mAh
Frequency: 20 - 20000 Hz
Sound intensity: 110 dB
Control: Button
Battery operated: Not Included
Approx. autonomy: 20 h
Battery: Yes
Quantity: 1 ud
Headphones: Binaural
Recommended use: Calls and music