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 | Use the App's "Tether Mode" to Send an Alert Before You Accidentally Leave Your Keys Behind | With Two-Way Technology Your Phone Can Help Find Your Spot Device And Your Spot Device Can Help Find Your Phone | Follow Instructions To Download The Spot App To IOS or Android And Pair To Your Device | Connects Up To 120 Ft From Your Phone or Tablet | Features a Replaceable Cell Battery | Compatibility: IOS 8.0 or Later & Android 4.2.2 OS or Later | The Bluetooth® word mark and logos are registered trademarks owned by the Bluetooth SIG, Inc. and any use of such marks by Hit Promotional Products, Inc. is under license. Other trademarks and trade names are those of their respective owners.