Delivery quantity: 1 piece Product color: white This anti-lost device is a product based on the new Bluetooth 5.0 low-energy technology. By using the APP software "isearching/kindelf" and mobile devices such as mobile phones for Bluetooth connection, the user's easily lost items, valuables (e.g., keys), mobile phones, bags, etc.) are grouped together to realize the functions of anti-lost reminder, two-way search, remote photography, recording and other functions. After binding the anti-lost device with the APP, it can be used within a range of about 25 meters (open range). Due to the interference of Bluetooth by the surrounding environment, its connection distance is different in different usage environments. Product features: 1. Find objects: Bind the anti-lost device with valuables. When the device is connected to the mobile phone Bluetooth APP, use the search function of the APP to make the anti-lost device emit a sound to find the object. 2. Find the mobile phone: When the device is connected to the mobile phone Bluetooth APP, when you need to find the mobile phone, double-click the button of the device to call the mobile phone, and the mobile phone will emit a sound. 3. Two-way alarm: Turn on and set the "Bluetooth disconnection alarm" switch in the software to realize two-way anti-lost. When the device is connected to the mobile phone Bluetooth APP, if the mobile phone is disconnected from the anti-lost device, both the mobile phone and the anti-lost device will emit an alarm sound, and the mobile phone will be lost, and the alarm will be reminded. 4. Selfie: When the device is connected to the mobile phone Bluetooth APP, use the Selfie function of the software to take pictures wirelessly. 5. Recording: Double-click the device switch button to record in the APP. 6. Disconnected positioning: When the item is disconnected from the mobile phone Bluetooth APP, the APP will record the lost location of the item after disconnection, and the lost location after disconnection will be displayed on the map in the APP. Product parameters: 1. Product net weight: 9g 2. Product gross weight: 24g 3. Material: ABS 4. Product size: 38*38*8mm 5. Packing size: 108*90*15mm 6. Battery: CR2032 button battery 7. APP: search/kindelfGood quality product