Features: Exclusive design patents, headphone ergonomic design, comfortable to wear easy to fall. Ear Hook design, reducing the world's best bass. Built-in high sensitivity microphone, clearer voice quality. Built-in lithium battery, support for 2 hours fast charging, provide up to 8 hours of music / talk endurance. Bluetooth one with two to meet the needs of multi-source. With a play button, you can control the music player and make and receive calls and other functions. Made of premium ABS material, the earphone is reliable and durable to use. Stable transmission and low latency are supported by Bluetooth-compatible 5.0 chip. Wired earphone looks very pretty and delicate as it uses creative pattern and shiny design. Cable length is 80cm. It is suitable for smart phone, tablet, PC, etc. Specifications: Bluetooth-compatible Version: Bluetooth-compatible 5.0 Playing Time: about 10 Hours Frequency Range: 20Hz-20KHZ Waterproof: IPX4 Model: BX-02 Speaker Size: 11MM Charging Time: about 2 Hours Transmission Distance: 10 Meters Headphone Battery: 100mAh (Included) Features: Waterproof, Long Endurance, Stable Transmission Color: Black, Multicolor Material : ABS Cable Length: 80CM (Approx.)