Multifunctional: This device works as an anti-loss alarm, GPS tracker, and selfie remote! Use it to remotely control your smartphone camera by pressing the search button. Two-Way Notification: Attach this wireless tracker to easily forgotten items like keys or wallets. The two-way key finder lets you track lost items or be notified when they're out of range with a ringtone or flash. Never Lose Your Keys Again: This smart tracker is compact, lightweight, and easy to carry as a keychain on your child's schoolbag or pet's collar. Real-time location effectively prevents your children and pets from getting lost. Provides a last-seen PIN on the map via the app to help you retrieve your items and find your car in the parking lot. Product Parameters: Bluetooth: 4.2 Material: ABS Battery: CR2032 3V 220mAH button battery APP: iSearching / Kindelf Working Distance: Approximately 20 meters Standby Time: Approximately 5 months Product Size: 52*31*11mm Product Net Weight: 10g PE Bag Size: 7.5*12cm PE Bag Packaging Weight: 13g Color Box Size: 107*87*15m Color Box Packaging Weight: 24g Mobile Phone System: IOS7.0 or higher, Android 8.0 or higher Product Color: Black; White; Features: 1. Item Finding Function: Link the anti-loss device to valuables. When the device is connected to the Bluetooth application on the mobile phone, use the search function in the APP to make the anti-loss device emit a sound to find the item. 2. Mobile Phone Search Function: When the device is connected to the mobile phone's Bluetooth APP, when you need to find the mobile phone, double-click the device button to ring the mobile phone, and the mobile phone will emit a sound. 3. Device Anti-Loss Function: Turn on the software switch for the anti-loss function in the software to realize a two-way anti-loss function. When the device is connected to Bluetooth on the mobile phone's APP, if the Bluetooth on the mobile phone and the anti-loss device are disconnected, the mobile phone and the anti-loss device will sound an alarm. 4. Selfie Function: When the device is connected to the Bluetooth APP on the mobile phone, use the Selfie function in the software to take photos wirelessly. 5. Recording Function: Double-click the device switch to record in the APP. 6. Function to Record the Last Lost Location of the Item: When the item is disconnected from the Bluetooth APP on the mobile phone, the APP will record the last lost location of the item, and the last lost location will be displayed on the map in the APP. Quantity: 4 pieces