Pop Tech Bluetooth 4.1 Wireless, High Definition, Noise-Cancelling, Water-Resistant, Tangle-Free, Lightweight Earbud Headphones, Built-in Microphone/Headset (Black/Green) BLUETOOTH 4.1 TECHNOLOGY: Enjoy all of your favorite activities handsfree with crystal clear audio up to 30ft from your device with our wireless earbud headphones VERSATILE HEADSET: Pair with iPhone, Android, laptops, tablets or any Bluetooth-ready device instantly to enjoy high-definition audio and clear, handsfree phone calls NOISE-CANCELLATION: Exceptional noise-cancellation technology and a comfortable, snug fit reduce external noise. Focus on YOUR listening experience and nothing else! WATER-RESISTANT AND TANGLE-FREE: Enjoy all of your favorite athletic activities with no concern of sweat damaging your headphones or bothersome wires ruining your workout HIGH-DEFINITION AUDIO: Enjoy the latest audio technology with super bass for a pure, rich listening experience using any audio format