Jokeret Wireless Bluetooth Headsets Sweatproof Premium Sound with Bass, Noise Cancelling Ergonomic Design, Secure Fit (Gray) COMFORTABLE and SECURE FIT: With Ergonomic design and silicone ear hooks, Bluetooth Headphones are secure behind your ears and rest comfortably in the ear canal. Premium soft smooth silicone gel surface helps sweat proof. It is great for Gym, Running, Jogging, Hiking, Cycling, and impact Sports. SUPERIOR SOUND and AMAZING VOLUME: With Advanced APTX tech, our in-ear design offers incredible sound quality with deep bass and crystal clear treble, no matter your taste in music. Works great for soundtracks, audio books, relaxing sounds, and even techno music. HOURS OF LISTENING TIME and VOICE PROMPT: Magicbuds Bluetooth Headset can deliver up to 7 hours of play time on a full charge. Voice prompt allows notification of incoming calls and phone numbers, so never miss a phone call. BLUETOOTH V4.1 and UNIVERSAL CONNECTIVITY: We give you the power of Bluetooth V4.1 technology for seamless syncing to your favorite wireless devices, including iPhone, iPad, Android cell Phones, Windows Phones, and more up to 10 meters 33 feet. JOKERET pays more attention to QUALITY. If you have any problem or suggestion, please don't hesitate to contact us at JOKERET Customer Service by details. Our shop will resolve it within 2 business days.