Ecoolbuy Portable Sound Remote Control Key Finder Locator Keychain Find White Key Chain Locater Small in size, portable and convenient Find your key or any other items easily Remote control by sound Whistle or shout within 7 meters to make it beep and flash Notes: Any loud noise will cause the key finder to beep and the light to flash. So if you are near a loud TV or loud noises, make sure to turn down.