Wireless Two-Way Finder Featuring Bluetooth® 4.0 Technology. Attach The Spot Finder To Keys, Purse, Etc. Use The App's "Find Mode" To Trigger An Alert To Help Find Your Keys. With Two-Way Technology. Your Phone Can Help Find Your Spot Device And Your Spot Device Can Help Find Your Phone. Connects Up To 120 Ft From Your Phone or Tablet. Use the App's "Tether Mode" to Send an Alert Before You Accidentally Leave Your Keys Behind.