Feature: 1. With functions of record lost locations, rename items, customize item icons. 2. BT networking mode for closely sensing search, supporting loss mode. 3. Super mini size and lightweight, portable to carry with you. 4. Smart finder support to track your lost iOS phone, iOS pad, and iOS MP3. 5. Low power consumption, just powered by a CR2032 battery. Specification: Specifications: 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: for iOS 14.5 and above Wireless: BLE5.2 Wireless Range: ≥40m Current: ≤5uA(standby)/≤10mA(Maximum) Voltage: DC3V Power Supply: cell battery (NOT included) Temperature Range: -5~45℃ (23~113℉) Humidity Range: ≤95% (non condensing) Water Resistant Grade: IP44 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)