This small, two-way "finder" uses Bluetooth wireless technology in conjunction with a free app (for IOS and Android devices) to help locate and remember important/misplaced personal items. Features include a Find Mode that sounds an alarm from the device to help locate it and a Tether Mode which can send an alert before you leave behind important items. You can connect and manage up to four (4) Spot devices. Item displays a full color Surgical Tech imprint or your optional personalization. Replaceable battery included. Item size: 1.65" diameter. Min. Order: 20) Bonus info: A tree is planted for every order placed)