1.RICHER BASS HD STEREO SOUND: With richer bass and dynamic drivers, provide the perfect HD and bass+ sound effect and better listening experience for intensified workouts.^ 2.IPX7 WATERPROOF PROTECTION: IPX7 waterproof shell and interior Nano-coating technology protect the sports earphones effectively from heavy rain or sweat during intense workouts. Perfect for running, jogging, hiking, yoga, exercises, gym, fitness, traveling and etc.^ 3. PLAYTIME: Offers 8 hours of superior audio performance / talk time after only 2 hrs charge. allows you to enjoy music for long and motivates you to do workouts for more. ^ 4.HANDS-FREE CALL WITH NOISE ISOLATION: With built-in CVC 6.0 noise canceling microphones, perfectly isolate ambient noise while you are talking, ensuring crystal-clear voice calls. ^ 5.STABLE AND COMFORTABLE FIT: Are designed for sports with intense movements, which comes soft silicone ear tips. 30 slanted ear design, 180 flanking ear hooks for your peace of mind.