Location guidance, find things more convenient: Lost items, APP accurately locks the last appearance of the location so that the items can be traced. IP66 waterproof and shower resistant: Excellent waterproof ability, no fear of rain and wet. Unlimited distance, global accurate finding: Relying on the network, as long as there is an for iOS device (for iPhone/for iPad/for Mac) in the vicinity, you can find the location of the item globally, and your privacy is always protected during the whole process. Easy to use: No need to download the app, you can connect to it through the "Find" app that comes with your for Apple device. Outstanding, more wonderful: Comes with a silicone lanyard, hang it on different items as you like. Free to Bind for iOS devices: Support iPhone/iPad/Mac multiple devices online at the same time, check your bound objects at any time. Device Wireless Connection Steps: Open the app on your iOS device. Select "Items" and click "+". Select "Other Supported Items". The words "Searching for items" will appear. After you find the device, press the next step of the APP to add it successfully. Specifications: Model: BR7 Material: ABS Battery: CR2032 300mAh APP: for Apple Find Buzzer sound size/frequency: 80dB Waterproof grade: IP66 Bluetooth-compatible connection distance: 20 meters Support OS: compatible with iOS 14.5/iPadOS 14.5 and above/ macOS 12.5 and above Size: 32 x 7mm Weight: 6g±2g