Bluetooth 5.0The latest Bluetooth 5.0 chipset offers stable and seamless connectivity with Bluetooth 5.0 and high sensitivity enabled devices (for iPhone and Android) up to 12 meters away.Provides in-call stereo sound. Also own fast and stable transmission without tangling. Lower energy consumption, more stable signal. Hi-Fi Stereo Sound QualityThe sound inside the Bluetooth headphones ensures that you won't miss any part or component of your music. Lossless HD sound quality with deep bass and crystal crisp treble, enjoy your music moment even in a loud environment. Dual ear HD callIt supports active noise reduction function and intelligent filtering of surrounding environment noise, so that your every call is like face-to-face conversation, and truly realizes the dual ear HD call. IPX7 Deep waterproofthese true wireless earbuds against damage from sweat or rain. It wont get in the way of enjoying sports, music and calls. Perfect for fitness traveling and etc.