The Olympus Windjammer (WJ-2) is designed to work with the high-quality, built-in microphone on the LS-7 Digital Recorder. It protects the mic from howling and popping wind noises. Even in a headwind, it reduces wind-related noise. The Windjammer is an ideal accessory for anyone who does a lot of outdoor recording.- Reduces wind noise of built-in microphone during windy conditions or headwind- Ideal for outdoor recordings