Designed to provide exceptional audio quality of videos captured with your iPhone 4/4S, the Fostex AR 4i Audio Interface for iPhone 4/4S and iPod touch 4G offers excellent quality stereo audio recording. The device features LED input level metering, gain control and headphone monitoring. The AR 4i is powered by 2 AAA batteries (included), and has a generous operation time of eight to ten hours. Two threaded tripod mounts offer compatibility with a tripod or camera rig, and a cold shoe accepts third party camera options. A dedicated, easy to use app for your iPhone 4/4S or iPod touch 4G is available as a free download from the Apple App Store. After you download it, you can easily control input level, microphone setting, equalization, filters, and more. In order to allow for compatibility with your fourth gen iPod touch, a dedicated adapter comes with the unit. The audio quality and versatile operation of the AR 4i make it ideal for both professional and in home applications. It's a perfect accessory for TV and radio reporting, live video streaming to the web, and even in home use to help you create high quality home videos. Founded in 1973, Fostex is an acclaimed manufacturer of location sound, multi track recording, and speaker products.