Sports Bluetooth V4.1 Headphones In-Ear Stereo Wireless Earphone Earbuds Headsets Earpiece Sweatproof Noise Cancelling With Microphone and Volume Control for Running Cell Phone Accessories (Black) Bluetooth 4.1 technology with EDR enhances high-fidelity stereo sound quality, the bluetooth headsets will give you top quality music experience Noise Cancellation: with CVC6.0 noise cancellation, the bluetooth headphone can reduce background noise , intelligently filter ambient noise, enable clearer sound Compatible with iPhone 5c 5/5s 6/6s Plus, iPad iPod, Samsung Galaxy, Tablets, Android Phones and other Bluetooth-enabled music players, mp3 The bluetooth earphone also features ultralight weight, up to 7 hours playtime for single charge and 32.8 feet long transmission range Note: The Bluetooth Earbud only has Chinese tone for now, but it will not affect the daily use