Bluetooth 4.1 Stereo Wireless In-Ear Headphones with Microphone Noise Isolating Handsfree for sports(Black) Clear stereo bass resonance and clear speech. Not only music, bluetooth phone still HD.; Multipoint pairing,connect to 2 tablets or cell phones simultaneously. Latest CSR8645 Bluetooth 4.1; easy and fast pairing with smartphones, tablets and other Bluetooth enabled music devices; aptX codec, CD-like sound for compatible devices. Two powerful audio drivers, balanced audio and crystal clear sounds, a comfortable and dynamic listening experience. CVC Noise Cancellation 6.0 technology reduces outside noises, enable clearer sound from microphone, you get high quality, hands-free phone conversation even on the street or inside shopping mall. Built-in Mic for hands free calling and rechargeable battery,enjoy wireless audio from your cell phone or tablet with up to 8 hours of talk/play time.;Up to 10M working distance. the most comfortable wearing earbuds. Lightweight and sweatproof design for running, jogging & Exercise Universal Compatibility: Compatible with most Bluetooth-enabled phones(such as for Apple Watch, iPhone 6, 6 Plus, 5 5c 5s 4, iPad 2 3 4, Mini Air 2, iPod Touch, Samsung Galaxy S6 S5 S4 S3, Note 2 3 4, LG G3 G4, HTC, Android Smart Phones) and tablets.Display headset's battery level on iOS; Auto-turn off without connection for 10 min with Deep Sleep power-saving mode.