Mpow Cheetah Bluetooth Headphones IPX5 Waterproof & 8-Hour Playtime, V4.1 aptX Wireless Sport Headphones, Behind-Ear Running Headset w/CVC6.0 Noise Cancelling Mic FREEDOM & NEVER FALLING OUT ON THE MOVE: Cheetah's stylish behind-Ear streamline design guarantee 100% stable and comfortable wearing experience for running, jogging, biking, driving, gym wokout, hiking and other outdoor sports. Hi-FI QUALITY: The most advanced Bluetooth 4.1 chips ensure Hi-Fi CD quality stereo music sound and strong signal. Provide no-lag voice when listening to music or calling with mic. 2 WAYS TO CARRY AROUND: Features good adhension and shape memory, the Cheetah bluetooth earbuds can surround your neck firmly or automaticlally roll up in a fixed shape to store in your pockets/ bags without tangling when not in use. LONG BATTERY LIFE: Up to 180 hours standby time and 8 hours talking/palying time. You never give up easily in the sports, so dose the Cheetah Bluetooth headphones! UNIVERSAL COMPATIBILITY: Compatible with almost all the Bluetooth-enabled devices, including iPhone 7 6 6 Plus iPad iPod Samsung LG Motorola Sony iOS/Android cellphones.etc.