Wireless Two-Way Tracker Featuring Bluetooth® 4.0 Technology. Attach The Seek Tracking Device To Keys, Luggage, Purse, Etc. Follow Instructions To Download The Seek App And Pair To Your Handheld 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 Seek Device From Your Phone Or Find Your Phone By Triggering An Alert From The Seek Map Where Your Seek Device Was Last Tracked. Multiple Seek Devices Can Be Paired To The App Simultaneously. Replaceable Cell Battery #CR2032 Included. Compatibility: iPhone®/iPad®/iPod® with iOS 7.1 or newer and Android 4.3 or newer. 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. iPhone, iPad and iPod are trademarks of Apple Inc., registered in the U.S. and other countries.