Wireless bluetooth headset

  Bluetooth version: 5.0
Support range: 2.402- -2.480GHz
Packing box size: 19 * 7.2 * 21cm
Speaker model: 4083
Speaker size: 40MM
Impedance: 32ohm
Sensitivity: 118 +/- 3db @ 1KHz
Frequency response: 20HZ-20KHZ
Rechargeable lithium battery: 3.7V / 200mA
Use time: 5-6h