Whistle Activated Key Finder, Sound & Light Alerts, Built-In LED, Battery IncludedWhistle Activated Key Finder for Keys and Small Items The Whistle Activated Key Finder is a compact and practical device designed to help you quickly locate your keys or other small items. With a sound activated alarm, built in LED light, and lightweight design, it provides a convenient solution for keeping your essentials within easy reach at all times. Sound Activated Tracking The key finder responds to whistles or loud sounds from up to 23 feet