Features: With functions of record lost locations rename items customize item icons. BT networking mode for closely sensing search supporting loss mode. Super size and lightweight portable to carry with you. Smart finder support to track your lost iOS phone iOS pad and iOS MP3. Low 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 : ≥40m Current: ≤5uA(standby)/≤10mA(Max.) Voltage: DC3V Supply: CR2032 battery (NOT included) Temperature : -5~45℃ (23~113℉) Humidity : ≤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 * 1 * Manual (English)