TheLF-18 Bone Conduction Bluetooth V4.1 Headphones with Mic features innovative bone conduction and top-notch wireless technology， letting you fully enjoy music worry-free. The sound waves is conducted directly to the acoustic nerve via ear bones. In this way， you can still hear the surroundings while listening to music. With an ergonomic design， it fits over your head and stays comfortably in place. Inbuilt noise-canceling microphone is sensitive enough to pick up your voice clearly， making hands-free calls easier than ever. So， what are you waiting for? Click and order right now!                                    Features             Use innovative bone conduction and top-notch wireless technology<br> The sound waves is conducted directly to the acoustic nerve via ear bones<br> You can still hear the surroundings while listening to music<br> Ergonomic design fits over your head and stays comfortably in place<br> Adjustable headband allows for a custom fit<br> Make it possible to wear headphones while wearing hearing aids<br> Inbuilt noise-canceling microphone for hands-free calls<br> Sweatproof housing， ideal for working out or outdoor uses<br> High-grade speaker reproduces high quality stereo sounds<br> Bluetooth V4.1 connection， with higher stability and lower power consumption<br> Multipoint technology allows you to pair and maintain connections with two devices at the same time   <br>                                                            Specifications            Bluetooth Version    4.1    <br>Color    Black    <br>Audio    Stereo    <br>Frequency Response Range    20‐20K Hz    <br>Transmission Distance    10 m    <br>Sensitivity    88dBm    <br>Charging    Mic USB port and need 2h    <br>Standby Time    10 Days    <br>Play Time    8h    <br>Dimensions    (5.12 x 4.84 x 1.97)" / (13 x 12.3 x 5)cm (L x W x H)    <br>Weight    2.19oz / 62g    <br>                                                            Package Includes            1 x Bluetooth Headset<br>1 x User Manual<br>1 x Elastic Bandage<br>