Description: Compared to other similar products on the market, our smart tracker is connected to the phone via-Bluetooth-compatible. You can observe exact location through App. With help of this product, it helps you find keys, wallets, remote controls or purses accurately and quickly. Our smart tracker has lightweight and compact size design, which is portable and has wide application. You can carry it in your backpack. It is constructed of ABS material. The APP will automatically record the last place where this item locator is disconnected from your phone. A mobile phone can be paired with 10-20 devices without affecting each other. The length of this product is 4.45cm, the width is 4.1cm and the height is 0.78cm. You can share your device with your family, and they can find it by ringing. The sound is up to 80db, and the working diameter is up to 10-15 meters. This product is perfectly suitable for home, travel, camping, hiking, outdoor, etc. Find your device with one click, click the "Call Device" icon on the APP to trigger the smart finder alarm. It is also easy to find your phone by double-tapping the button on the smart finder to trigger the phone ringtone. Item Name: Smart Tracker Material: ABS Working Current: 3.7mA Standby Power Consumption: 15uA Volume: 50-80dB(Adjustable) Connection Method: Bluetooth-compatible 4.2 Waterproof: No Battery: CR2032(Battery Not Included) Use Distance: Indoor < 25 meters, Outdoor < 80 meters Working Temperature: Minus 20 Degree Celsius-50 Degree Celsius Humidity: Less Than 90 Percent(Non-condensing) Size Details: 4.45cm x 4.1cm x 0.78cm/1.75" x 1.61" x 0.31" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Smart Tracker 1 x User Manual