Sony Premium Lightweight Splash-Proof Wireless Bluetooth Stereo Headset (Black) Bluetooth - Enjoy high quality Bluetooth audio streaming and simplified connectivity with Near Field Communications (NFC) technology. Simply align your compatible devices and touch the NFC logos to activate or deactivate pairing. With built-in AAC and apt-X codec support, you will benefit from maximized signal quality when streaming your music wirelessly Around-the-Neck Design - Designed to be worn and used all day and in any situation, the headphones are discreet and suits any type of clothing style. Wear it at work, at home, indoors or outdoors. Multi-compatible - The Stereo Bluetooth Headset is compatible with all popular smartphones, tablets and laptops. It supports Bluetooth Multipoint which makes it possible to connect device to two devices at the same time Splash-Proof - The main unit and headphone exterior are splash-proof so you dont have to worry if it rains Integrated HD Mic for Taking Calls - Stereo Bluetooth Headset is HD Voice ready. HD Voice, also known as wideband audio, lets the person youre talking to experience your voice as it really sounds  natural. HD Voice fades or cuts out background noises and makes it easy to recognise voices. The headset has double microphones. Whichever way your head is turned youre always close to the microphone, so your caller gets a clear and even calling experience