PFEIL "Swiss Made" Palm Set B, 6 Pieces COMFORTABLE and SECURE FIT: With Ergonomic design and silicone ear hooks, Amuoc 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. NOISE REDUCTION: With CVC 6.0 technology, the Hussar Amuoc Bluetooth Earbuds reduce background noise, so you can focus on your favorite music, no matter where you are. 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. HOURS OF LISTENING TIME and VOICE PROMPT: Amuoc Bluetooth Headset can deliver up to 10 hours of play time on a full charge. Voice prompt allows notification of incoming calls and phone numbers, so never miss a phone call.