NuclearAV U-238 Bluetooth Wireless Headphones (Black) Powerful 40mm neodymium magnet speaker drivers deliver mind-numbing audio quality in a lightweight package, with hard hitting bass and stunning highs. Bluetooth 3.0 connection delivers your music wirelessly from any Bluetooth device, such as iPods, iPhones, Android Devices, Cellphones, MP3 players, tablets, laptops, and computers. A built-in rechargeable Lithium-Ion battery delivers a whopping 10 hours of playback time, and is easily recharged through a standard USB port or USB charger. (Wall charger not included.) Supple leather ear pads and a soft padded adjustable headband combine to ensure a comfortable headphone wearing experience. Call controls and a built-in microphone ensure you never miss a call while the headphones are paired with a compatible Bluetooth cellphone.