Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si 1. P13 built-in 140mah battery to provide you with battery life protection anytime and anywhere 2. Intelligent active noise reduction, reduce the surrounding noise and make the call clearer 3. You can connect two Bluetooth devices at the same time, switch to listen to , games, and calls at any time. 4. Strictly fitted waterproof, sweat-proof and dust-proof rubber plugs to prevent sweat, water and dust from corroding components 5. High-quality call listening experience, long battery life, no fear of running out of power Bluetooth version: 5.1 Talk/listen to for 15-20 hours Charging time 1-2 hours Caller ID Headphone model: P13 Accessible 15m connection Talk time: 15-20 hours One answer/reject call colour: black-red Material: ABS Size: 6.8x3.8x2.6cm Package Contents: 1 x Mono earphone 1 x usb data cable 1 x size ear cap 1 x Chinese and English manual Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.