Lossless HIFI original sound is pure and transparent, deep noise reduction, high restoration, low distortion sound and full enjoyment of pure HiFi sound quality. Stable in the ear, not loose, not falling, comfortable to wear and not painful to wear for a long time. It can be magnetically absorbed and stored without shaking. The built-in large-capacity battery case continues to play music for 12 hours. With a dust-proof and sweat-proof design, you can enjoy sweating while exercising. Product Name: Wireless Sports Bluetooth Headphones Bluetooth version: 5.1 Continuous play time: 13~15h Transmission distance: 10m (barrier-free) Battery capacity: 150mAh Charging voltage: 5V Charging time: x50min Charging socket type: Micro-USB Frequency: 2.4GHZ-2.480GHz Receive sensitivity: -93dbM Colour: green Material: silicone Package Contents: 1 * Headphone 1 * Data Cable 2 * Ear Cap Only the above package content, other products are not included. Note: Light shooting 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.