Wirelessly Record High Quality Audio on to your Device from up to 30 feet away * The high Performance Condenser Microphone with DSP Noise Cancellation Records Incredibly Accurate Sound * Works with iPhone 4, iPhone 3GS, iPod Touch 4th Gen and iPad 2 * Rechargeable Lithium ion Battery Provides up to 4hrs of run time * Built in Clip Easily Secures to Clothing