1、Multi Purpose: Key finder locator has various uses, can be used for finder, location tracking device, anti lost device, key chain, etc., with strong practicability. 2、Anti Lost: When out of BT range, use the app to see your locator's latest location on the map. 3、Small Light: The remote finder has a compact design, small size, and light weight, so you can carry it around without extra burden. 4、Supported Systems: The supported systems of key locator device include,for Android 5 and for IOS 9.0. 5、Wide Applicability: Item locator has a wide range of applications, suitable for keys, pets, various important items, etc. Item Type: Key Finder Locator Material: ABS Product Size:Approx. 3.8 x 3.4 x 0.9cm / 1.5 x 1.3 x 0.4in Battery Type: Button Battery (Shipped with Built in Battery) Battery Model: CR2032 Battery Capacity: 210mAh APP:For Findmy Tag Support System:For Android 5,for IOS 9.0 Length: Approx. 38mm / 1.5in Width: Approx. 34mm / 1.3in Thickness: Approx. 9mm / 0.4in 1 x Key Finder Locator 1 x User Manual