Memory Mic captures broadcast-quality audio to compliment the high-quality video of smartphones. Setup is easy - Memory Mic initially connects to your smartphone via Bluetooth. Once set up, Memory Mic operates at any distance from the smartphone, as it records and stores up to 4 hours of audio internally. When recording is complete, Memory Mic’s internally captured audio is automatically transferred to the smartphone via Bluetooth, and synchronized with the recorded video via the Sennheiser Memory Mic App, a free download available on the App Store or Google Play.