Global positioning without any restrictions on regions. Lost mode: When the drone explodes, turning on this setting can effectively the chance of the device being safely recovered. Intelligent lost reminder: The decibel is as high as 120dB, and it can be heard even if it is lost in a large area, which can effectively prevent the drone from exploding and . Precise search: Within 10-100m of the alarm, the alarm and 100 lumens LED light function can be triggered by the mobile phone to accurately locate the specific location of the drone. Small and light, does not affect flight, easy to install. Model: Alarm Device Charging voltage: 5V Charging current: 200mA Decibel range: 120dB(MAX) Bluetooth connected phones are limited to:for 11 and above, IOS14.5 and above The product appearance and printed words depending on the batch, but this does not affect use. Colour:Gray Material:plastic Package Contents: 1 * Alarm Device 1 * Charging Cable 3 * Double-sided Tapes Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.