Feature: 1. [Drone Finder] Specially designed for drones to prevent them from falling and losing, suitable for AVATA series, for MAVIC series, for AIR series, only applicable for IOS 11th generation and above, for IOS 14.5 and above versions. 2. [Audible and Visual Alarm] Equipped with 120dB high volume speaker and 100LM LED light, the alarm can be automatically controlled through mobile phone connection. Or actively trigger the alarm and flash after being turned on and left to stand for 30 minutes. The duration of each alarm and flash is 10 seconds. 3. [Remote Activation] The alarm and flashing function can be triggered by a mobile phone within a range of 10 to 100m near the alarm, which can effectively solve the search difficulties caused by complex environments and save search time. 4. [Long Battery Life] Powered by a 250mAh polymer battery for up to 15 days of standby time. Can sound the alarm for up to 4 hours continuously. Support fast charging in 1.5 hours. 5. [Secure Attachment] Securely mount the drone finder with silicone strap to prevent loosening or dropping. Easy to install and remove on various drone models for added convenience. Specification: Item Type: Drone Buzzer Material: ABS, Silicone Battery Information: Lithium ion battery 250mAh (built in) Maximum Decibel: 120dB Standby Duration: 15 days Applicable Models: for AVATA series, for MAVIC series, for AIR series Compatible Devices: for iOS models that support near field communication, 11th generation and above, for iOS 14.5 and above versions Charging Interface: Type C. Package List: 1 x Drone Buzzer 1 x Charging Cable 1 x User Manual 1 x Fixing Device