AUSDOM S04 Bluetooth Headphones, NFC Wireless Stereo Sport Earphones Earbuds with Built-in Mic Noise Cancelling Sweatproof Bluetooth Headset for iPhone iPad Samsung Galaxy S7 Edge S6 and Bluetooth Devices Featuring a stylish, interchangeable ear-hook pattern, AUSDOM S04 lightweight earbuds are comfortable and flexible. Sweat-proof and water-proof earpiece design makes them fit neatly and securely inside your ear, free up your hands and afford a full range of motion while working out or in daily multitasking. Signal Enhance Technology Bluetooth ISSC v3.0 with NFC/ Built-in microphone and controls for phone calls, volume, and music playback. Noise Cancellation 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. Up to 5.5 hours of battery life for both talk and audio playback (iPhone displays headset battery meter). Ergonomic design optimized for ultimate wearing comfort to match your active lifestyle like running, jogging, cycling, driving, camping, hiking, gym exercise and other outdoor sports. Compatible with most Bluetooth-enabled cell phones.