1-4pcs Bluetooth Wireless Headphones Bass Headset Neckband Sport Stereo Earphone With Microphone Headphones For All Smartphone

Product Describes:-Exclusive design patents, headphone ergonomic design, comfortable to wear easy to fall.-Ear ear design, reducing the world's best bass.-Unique magnetic control, Not easy to fall.-Built-in high sensitivity microphone, clearer voice quality.-Built-in lithium battery, support for 1.5 hours fast charging, provide up to ten 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.Key parameters:(1) Bluetooth version: CSR4.1(2) Frequency response: 20-20000Hz(3) Bluetooth usage frequency: 24Ghz(4) Pressure transmission distance: About 15 meters (disabled)(5) Color: Red,Black(6) Standby time: About 240 hours(7) Call/play time: About Total 10 hours