The WIWU Soundcool Headset Wireless Bluetooth Headphones feature a powerful JL 7003F chip, Bluetooth V5.3, and a long-lasting 300 mAh battery. Enjoy up to 26 hours of music, 7 hours of phone call, and 30 hours of standby time with a fast charge of only 2 hours. Support both Bluetooth and Aux music, the headphones come in a sleek 123*127*160mm design with a net weight of 558g.