【IPX7 Truly Sweatproof Technology 】Sweat Guard is specially designed to resist the corrosive properties of sweat. 【High-Octane Sound】 10 mm dynamic drivers, precision tuning, and exclusive BassUp technology ensure Spirit X’s deep low-end is balanced by lush mids and crystal-clear treble. 【Extreme Comfort】 Gentle over-ear hooks and softened silicone ear tips float effortlessly in place as you sprint, lift, and push your way to the limit. 【12-Hour Playtime】 Get sublime bass-driven sound for well over a week of workouts from a single charge. 【What You Get】 Sound core Spirit X, XS/S/M/L/XL Ear Tips, S/M/L Ear Wings, 2 x Cable Clips, Shirt Clip, Micro USB Cable, Travel Pouch, Carabiner, our worry-free 18-month warranty, and friendly customer service.