Red Fox Wireless Sidekick Bluetooth Transmitter SIDEKICK turns non -Bluetooth device such as iPod, computer, treadmill, or television with a 3.5mm audio jack into a Bluetooth Enabled Audio Machine The device is small and easy to use, perfect for the runner who wish to have wireless iPods Runs on rechargeable lithium-ion battery providing 10 hours of continuous use and gets recharged in two hours Provides high clarity sound, that helps to go wire free without missing a beat Range up to 32'. Limited One-year Warranty