SoundWave Universal Wireless Bluetooth Headphones - Blue BLUETOOTH 4.1 advanced technology with ORIGINAL CSR CHIPSET; easy and fast pairing with smartphones, tablets & other Bluetooth enabled music devices with apt-X technology for CRYSTAL pure wireless sound within a 10-meter range NOISE CANCELLATION: Technology inside the bluetooth sport earbuds reduces outside noise, enables clearer pure sound to & from the microphone via apt-X, you get high quality, pure hands-free phone conversations on the go. EASY ACCESS: The simple buttons on one of the bluetooth wireless earbuds allows you adjust the volume, play/pause, select songs and answer/hang up calls effortlessly, drivers on each side keep sound crisp, clear and in sync, IOS systems display battery capacity, Voice prompt PERFECT PROTECTION: The sports bluetooth headset are protected with Nano Coating Technology to guard against sweat and moisture damage SUPER BASS & EASY CONNECTIVITY: these headphones have super bass for a magnificent music experience. Smart Wireless means No audio plug connection, it will pair with Bluetooth compatible devices with no delay after first pairing. Will automatically connect to your devices.