1. Product net weight: 9g 2. Product gross weight: 22g 3. Bluetooth: 5.0 4. Material: acrylic + ABS 5. Product size: 40*7.2mm 6. Color: black 1. This product is small, exquisite, and easy to carry. After binding with other smart devices such as mobile phones or tablets, it can be widely used for anti-lost and search for wallets, keys, briefcases, pets, suitcases, and other items. 2. Intelligent anti-lost and object finding: Automatically record the lost location of the item. When the device is disconnected from the mobile phone, the software map will automatically record the location, and find the location record through the map. When the effective range is reached, the device and the mobile phone will automatically reconnect. Click Find keys to easily retrieve lost items. 3. Super power consumption and green environmental protection: adopting the new Bluetooth5.0 low power consumption technology, a CR2025 button battery can last for 6 months in standby time. Package Contents: 1 piece