More than 70 million smartphones are reported lost or stolen each year. The cost of replacing your lost iPhone, the downtime, and the threat to your personal information and you will see Proximo is a must-have for any iPhone user. The Proximo Tag allows you to use your iPhone to keep track of one valuable item. Use it to track your camera, briefcase, handbag-anything you never want to worry about losing. Proximo allows you to add up to 4 Tags (sold separately) so you can keep track of your most valued items. No more stressing over losing important items or wasting time searching for them. Let the Proximo Tag help you track and recover your most valued items. Bluetooth 4.0 technology. Alarm Output: FOB 95dBa; Tag 84dBA. Replaceable Lithium coin battery CR2032.