Honstek H9 Bluetooth Headphones, Wireless Earphones with Mic, IPX4 Sweatproof, Premium Sound with Bass, Noise Isolating, Ergonomic Design, Secure Fit, 8 Hrs Playtime (Black Gray) COMFORTABLE and SECURE FIT: With Ergonomic design and silicone ear hooks, H9 Bluetooth Headphone provide you secure and comfortably. Soft smooth silicone gel surface helps sweat proof. It is great for Gym, Running, Hiking and etc. SUPERIOR SOUND and AMAZING VOLUME: With Advanced APTX tech, our in-ear design offers incredible sound quality with deep bass and crystal clear treble. Works great for soundtracks, audio books, relaxing sounds, and techno music. NOISE REDUCTION: With CVC 6.0 technology, the Honstek H9 Bluetooth Earbuds reduce background noise, so you can focus on your favorite music. The Bluetooth Earphones is so portable for travel, work and anywhere in between. 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, Windows, and more up to 10 meters 33 feet. HOURS OF LISTENING TIME and VOICE PROMPT: H9 Bluetooth Headset can deliver up to 8 hours of play time on a full charge. Voice prompt allows notification of incoming calls and phone numbers, so never miss a phone call.