Dont give up anything.The AirTag is a very easy way to know where your stuff is.Put one in the keys, another in the backpack, and you will have them located with the search app.IP67 rating (up to 30 minutes at a maximum depth of 1 meter) according to IEC 60529 Bluetooth for proximity location. Apple-designed U1 chip for ultra-wideband technology and Accurate Tracking functionality. Tap NFC for Lost Mode Integrated Speaker User-replaceable CR2032 button battery AccelerometerTrack your stuff and find your devices and friends with the Find My app. With one-touch setup, you can connect AirTag to your iPhone or iPad instantlyActivate a sound through its built-in speaker to find your stuff, or simply ask Siri for helpThanks to ultra-wideband technology, Accurate Tracking features guide you to a nearby AirTag (on select iPhone models)Find your lost items away from home with the help of hundreds of millions of Apple devices on the Find My app networkSet your AirTag to Lost Mode to receive an automatic notification when the Find My app network detects itAll communications over the Find My app network are anonymous and encrypted to protect your privacy