Pet Dog Small GPS Transmitter Tracking Tracker Waterproof Smart Mini App GPS Transmitter Keychain Car Small Wallet Children's Bag Valuables Lost Item Prevention Tracking Dustproof Mini size, pocket size GPS * Can be used for keychains, wallets, and pets! Pet dogs GPS tracker Bluetooth connection Compatible systems: iOS 7.0 or later, Android 4.4 or later iserching app download required (included in the English instruction manual) Press and hold to turn on the power ☆ iOS/Android compatible Product weight: Approximately 7g Color box packaging: Approximately 7 x 9 x 2cm / 2.76 x 3.54 x 0.79 inches. Size: Approximately 38 x 38 x 7mm / 1.5 x 1.5 x 0.28 inches. Material: ABS Usable distance: Approximately 15 meters Powered by CR2032 button battery * Approximately 10 months of long standby time ver.: 4.0 ★ Thank you for viewing. (Nervous people) please refrain from purchasing ☆