The Hama Bluetooth tracker makes finding your valuables just a little easier. Simply attach it to the item you want to track and pair it with the Find My app for Android. All data on the tracker is encrypted to protect your privacy. Set of two. Water-resistant according to IPX5 Bluetooth Up to 78 dB beep Up to 12 months of battery life (CR2032, user-replaceable) With eyelet and loop Dimensions: 33 x 33 x 9 mm (L x W x H) Weight: Approx. 9 g Colour: White Includes: 2 x loop, 2 x button cell CR2032