PREMIUM HD STEREO SOUND + RICH BASS: Surround yourself with Rich Crystal Clear High Fidelity Sound and Impressive Volume Capability. Take your workout to the next level with Superior Dynamic Acoustics delivering Deep Rich Bass and Crystal Clear Treble through cutting-edge components and the V-Shaped Sound Signature Profile. SECURE FIT - GREAT FOR SPORT: Specifically designed for sports enthusiasts, the HARNESS SC750 Bluetooth Headphones are perfect for Gym Workouts, Running, Jogging, Hiking, Biking, Yoga, CrossFit, etc... The ultra-lightweight ergonomic design delivers a comfortable and stable fit by securing behind your ears with soft flexible ear-hooks and resting comfortable in the ear canal with premium soft silicon ear tips. IPX7 WATERPROOF & SWEAT-PROOF. No need to worry about rain or sweat; Smash your goals and sweat your heart out with the IPX7 Waterproof rating. The IPX7 Waterproof coating provides a double layer of protection on the shell and internal components. This design makes them the absolute best wireless headphones for sports.

【The Lightest Bone Conduction Glasses】: Lighter and more professional. The Frame is made of TR90 plastic,smooth and hiden structure design of bone coduction speaker helps it keeps the original appearance of traditional glasses, people around you will not notice the difference of your glasses between traditional glasses. No pain and no sens of pressure even wearing for a long time. 【BLUETOOTH VERSION 4.1 WITH MIC & CVC Noise Reduction】 Wireless Bluetooth 4.1with wide compatibility. 2 in 1 wireless connection allows 2 mobile device pairings into the headset simultaneously.The smart sunglasses has built-in noise-cancelling microphone that lets you make and answer phone calls. You can easily have phone calls with quality sound when riding, running, driving, boxing, fishing, playing the basketball, shopping and other outdoor activities. 【OPEN EAR SOLUTION】Open Ear Solution allows you to listen to music, answer calls, and hear notifications all from your glasses while still being able to hear the world around you.