The Loc8tor Lite can help you find missing items like keys, phones or even kids or pets by leading you straight to the homing beacons attached to your belongings. The LEDs on the handheld main unit can lead you to as many as 4 registered homing tags. When you activate the attached beacon, you"ll hear it chirping and see it flashing, too. Includes 2 mini homing tags, 2 key ring loops and adhesive squares. Requires 1 CR2032 and 2 SR54 cell batteries, included. Loc8tor Lite Mobile Phone & Key Finder measures approximately 11 cm x 5.5 cm x 1.5 cm. Each Mini Homing Tag measures approximately 3.5 cm x 1.95 cm x 0.85 cm