Skullcandys number one selling earbud is now wireless. Bluetooth wireless up to 33 feet, 7 hour battery life. These have supreme sound with around the neck collar light enough for all day wear and featuring a flexible design that makes for easy and safe storage, Noise isolating fit, Built-in microphone, call, and track and volume control. Wirelessly connects to your device from up to 33 feet (10m) away. An around-the-neck collar light enough for all day wear and featuring a flexible design that makes for easy and safe storage. Silicone ear pieces. Tpe cord. Foldable. 10mm driver. 10m range. Compatible with universal smartphones. Li-Ion battery (included) . Rechargeable battery. 8 hour battery life. 90 minute charging time. Model number: S2IKW-J573. Manufacturers 2 year guarantee.