Functions: 1. “Find” the network location When the device exceeds the Bluetooth distance of the phone, the device cannot be connected in the search app. Select: Lost Mode-On. Enter your phone number, etc. If the device has been disconnected from your phone for more than a while and there is another Apple device near the device, you will receive notifications and the last location of the smart tag. 2. Play the sound Mobile phone and device in home BLE model (Generally about 20 meters), in the APP "find", click, play the sound, the device will make a prompt sound, help you quickly find the proximity by smart label.Model: Tag 09 Size: 38.6x40.0x7.3mm/1.52x1.57x0.29inch Weight: 8g / 0.28 oz Cell: CR2032 Working voltage: DC 3V Operating current: standby current 5uA/maximum current 10mA Wireless: BLE 5.1 Wireless transmission distance: 40m Buzzer: 75 db built-in (at 10cm) Operating temperature: -5°C to 45°C Working humidity: 95% (non-condensing)