1.Small Thin & The compact size makes it easy to fits into your keys, wallets, luggage, purses, backpacks, cameras, , and moreTrack & Locate Lost Items This 2-way tracking system attaches to personal items and uses Bluetooth 4.0 technology so you track of valuablesReal-time Notification --- A two-way system that lets you track lost items or be notified when they are out of range with a ring, vibrate or flashFind Anything in Second Attach this Bluetooth tracker to anything we always forget and Keep track of them.-Taking Pictures Remotely - Control your Smartphonecamera from distances of up to 49.2 foot(15M)Description:Product Name: Bluetooth Smart Tag Finder TracerProduct material:ABSProduct color: random colorProduct size:3.7cmx3.7cmx0.5cmProduct weight:13gPackage Contents:1x Bluetooth Key Finder1xChinese/English using manualOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.