Wireless Two-Way Tracker Featuring Bluetooth® 4.0 Technology And Beagle 2.0 Technology | Attach The Beagle Tracking Device To Keys, Luggage, Purse, Etc. | Follow Instructions To Download The Beagle App And Pair To Your Device | Alerts You When You Are Leaving Behind Important Items | Never Lose Your Keys or Phone Again With One-Touch Find | Using Two-Way Technology, Locate A Beagle Device From Your Phone Or Find Your Phone By Triggering An Alert From The Beagle | Map Where Your Beagle Device Was Last Tracked | Multiple Beagle Devices Can Be Paired To The App Simultaneously | Connects Up To 120 Feet From Your Phone/Tablet | Split Ring Attachment | Replaceable Cell Battery #CR2032 Included | 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.. Approximate Size: 1 2/5″ W x 1 2/5″ H, Imprint Area: 1 1/4″ W x 1 1/4″ H.