CONVENIENT SHARK-LIKE MAGNET and PLEASE NOTE: The built-in magnet attracts the earplugs when you don't need them, greatly decreasing the burden on ears and giving you a convenient storage way to carry around. NOTE: To protect the earbud cable from the damage of pulling force, please pinch the earplugs instead of the cables when pulling earplugs out of the shark-like magnet which can ganrantee the lifespan of earbuds by using it in the right way. NOISE CANCELLING TECHNOLOGY: Featured with CVC6.0 noise cancelling technology, our headphone filters out background noise to guarantee high quality sound and provides you clearer voice for calls. BLUETOOTH 4.1 TECHNOLOGY: Provides a several-second and stable paring with your bluetooth enabled device. Offering you impressive dynamic sound even you are 10 meters away from your device. FLEXIBLE & LIGHTWEIGHT: weighs only 1.2 oz in flexible and durable silicone neckband, 60% lighter than any other neckband headset , you'll even forget you have them on! ULTRA LONG WORKING TIME: Powerful rechargeable battery provides up to 13 hours of continuous talking/music time and 350 hours of standby with a single charge.