M10B Wireless Wireless Headphone for Car & Truck Drivers,Jiale Over-the-Head Multipoint Noise Canceling Wireless Headset With Mic Handsfree Calling for Apple IOS Android Samsung Smartphones -Black Talking time: 20 hours;Stand-by time: 350 hours;Charging time: Below 3 hours. Chipset: CSR BC6 V2.1;Data encryption: 128 bits encrypted;Broadcast range: 10m / 32ft. Support: AVRCP, Headset, Handsfree, Noise-Canceling, Voice-Dial/Mute With multipoint connection, the Wireless headset can be connected with two Wireless devices at the same time. Easy operation and perfect voice quality.