Lightweight Headphones - The B7 lightweight open ear headphones have been designed for people who want a small, portable set of headphones but still require a good level of performance. The B7 only weighs 55grams / 1.94oz, it is a great choice for workout headphonesBluetooth 5.3 and Multipoint - The B7 air conduction headphones upgraded with Bluetooth 5.3 to bring you a better wireless listening experience with improved audio quality, wider range, and better stability. With multipoint connectivity, you can connect 2 Bluetooth devices (e.g. TV and phone) to the B7 at the same time and switch between them seamlesslyUp to 15 Hours Playtime - You dont have to worry about battery life with the B7, which is able to last throughout the entire day with up to 15 hours of battery life. When it does run out of juice, you can conveniently charge it with the USB-C cable for 1.5 hours and youre good to go for another 15 hoursENC/CVC 8.0 - The B7 features advanced environmental noise cancelling technology to reduce background noise, this technology ensures that you can make clear calls while riding motorcycle, driving truck or making a phone call on a noisy streetSpecial Features - 14mm speaker drivers optimize wearing comfort 3D flexible earhooks ensure secure fit in all ear sizes. It is not in-ear design, it's over your ears, it means you can hear sound around you. With a digital power display reminds you to keep up the battery