TRACK YOUR BELONGINGS ANYTIME WITH THE TRACK IT ANTI LOSS KEY FINDER. ANTI LOSS PERSONAL ALARM BLUETOOTH KEY FINDER FOR IOS AND ANDROID. COMMUNICATION RANGE UP TO 80 FEET DEPENDING ON THE ENVIRONMENT. WHEN KEY FINDER GOES OUT OF RANGE, THE APP WILL ALERT WITH A SOUND, VIBRATION AND FLASH. ALARM CAN BE SET ON KEY FINDER, PHONE OR BOTH. 1 1/4" DIAMETER X 9/32" THICK