HD SOUND - 8mm Speakers combined with Bluetooth 4.1 create super accurate HD sound with powerful bass. The bullet-shaped Comply T-400 M memory foam tips provide Total Isolation from external noise. MAGNETIC - Easily stow your Ear buds by wearing them around your neck. Instantly access your Earphones anytime without searching your pockets. Looks cool as well! SWEAT PROOF - Say Goodbye to Water-Damage! Protected by Hydrophobic Nano Coating your Buds withstand sweaty workouts and will survive accidental dropping into water - Guaranteed! SECURE FIT - The patented winged earphone tips hold your Buds in place during rigorous workouts. Over- and Under-Ear fit options included. LIFETIME SWEATPROOF WARRANTY - Don’t be afraid to push your workouts to the max! We’ll replace your Earbuds if they ever get damaged by sweat! No questions asked.