Features: With functions of record lost locations, rename items, customize item icons. BT networking mode for closely sensing search, supporting loss mode. Super mini size and lightweight, portable to carry with you. Smart finder support to track your lost iOS phone, iOS pad, and iOS MP3. Low power consumption, just powered by a CR2032 battery. Specifications: Color: White / Black Optional Material: ABS Auxiliary functions: record lost locations, rename items, customize item icons Networking Mode: BT, for close sensing search, supporting loss mode Buzzer: Built-in 75dB (in 10cm) System: iOS 14.5 and above Wireless: BLE5.1 Wireless Range: 40m Current: 5uA(standby)/10mA(Max.) Voltage: DC3V Power Supply: CR2032 battery (NOT included) Temperature Range: -5~45 (23~113) Humidity Range: 95% (non-condensing) Waterproof Grade: IP53 Item Size: 37 * 37 * 8mm / 1.46 * 1.46 * 0.31in Item Weight: 9g / 0.32oz Package Weight: 24g / 0.85oz Package Size: 11.5 * 7 * 1.2cm / 4.53 * 2.76 * 0.47in Package List: 1 * Tag 1 * Manual (English)