Wireless headset from TENPLUS - Bluetooth speaker and headset 2 in 1 / multi colors

Specifications: speaker amplifier power: 4 ohm / 3 watts battery capacity: 400 mAh / hour gives you 8 hours of listening (in headphone mode) gives you 3 hours of listening (in speaker mode) Bluetooth version: 5.1 coverage range: 10 meters frequency response: 60 Hertz to 18 Kilohertz charging: DC voltage 5 volts 330 mA