Features: The ultra-thin card-type anti-loss device is simple in design, compact in size, easy to carry and easy to use. Built-in high-quality chip with high performance and low power consumption for fast and long-lasting search and localization. There is no need to download an APP, no traffic network, and one-click search. As long as there is for iOS equipment near the anti-lost device, the anti-lost device can maintain its positioning state. When items are within the range, you can use the APP 'Find My', click the Play Sound button, the device will sound Reminder, according to the sound reminder, you can quickly find the items. When items are out of range, as long as your items are around this smart tag, you can track the location of items with the help of Find My network The smart tag with sound made of high quality material, with a BT range up to 40m and a beeping sound ring up to 75dB. Built-in lithium battery (GN CP124653A) has a battery life of about 2 years and can be used for a long time. It can be used in various scenes to easily track various items. You can use it to locate your travel luggage, keys, backpack, handbag and so on. Specifications: Color: Black / White (Optional) Battery: GN CP124653A Voltage: 3V Current: 550mAh Wireless: BLE5.1 Transmission Distance: 40m(Line-of-sight) Buzzer: built in, 75db(in 10cm) Working Temperature: -5 to 45(23 to 113) Working Humidity: 95%(no condensation) Material: ABS Item Size: 86 * 54 * 2.7 mm / 3.38 * 2.12 * 0.11 inch Item Weight: 18g / 0.63oz Package Size: 10 * 8.2 * 1.1 cm / 3.94 * 3.23 * 0.43 inch Package Weight: 33g / 1.16oz Package List: 1 * Locator 1 * User Manual (English)