XQISIT Mono Wireless Headset w / Mic is a wireless headset with a unidirectional boom microphone for better hands-free calling comfort. Supports pairing with two smartphones at the same time. You can listen to music or use the hands-free mode with a working time of the set up to 24 hours. -Bluetooth 5.0 & ndash, 10m range -Play time: up to 24 hours -Charging time: approx. 2 hours – Standby time: up to 350 hours – Mic sensitivity: 45 d -Battery capacity: 400mAh -Weight: 135 g -Frequency: 2.402GHz & ndash, 2.480GHz -Size: 166mm / 59mm / 65mm