1. A Siren Specially Designed For Dji Drones To Prevent The Body From Being Found After The Drone Is Lost. It Is Suitable For Dji Avata Series, Mavic Series, Air Series, And Mini Series. It Is Only Suitable For Iphone 11 And Above Mobile Phone Models. , Ios 14.5 Or Above. 2. Equipped With A 120db Speaker And 100 Lumen Led Light. After Connecting Through A Mobile Phone, You Can Independently Control The Alarm And Flash Of The Siren. You Can Also Actively Trigger The Alarm And Flash After Turning It On For 30 Minutes. The Single Duration Of The Alarm And Flash Is 10s. 3. The Alarm And Flash Function Can Be Triggered Through The Mobile Phone Within A Range Of 10-100m Near The Siren, Which Can Make Up For The Pain Point Of Being Unable To Accurately Locate The Last 100m After The Drone Crashes. 4. Usb-C Rechargeable Battery Has Long Battery Life: The Alarm Is Powered By A Safe And Durable 250mah Polymer Battery. The Battery Life Is 15 Days In Standby Mode After It Is Turned On. If You Let It Keep Chirping, It Can Last Up To 4 Hours. The Type-C Port Design Makes The Alarm The Device Easily Fully Charges In 1.5 Hours Via Usb-C Cable. 5. It Is Tightly Installed On The Drone Through The Silicone Strap, And It Is Firmly Fixed And Will Not Loosen Or Fall Off. The Alarm Can Be Easily Installed And Removed On Various Types Of Drones. Type: Drone Siren Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Colour:As Shown Material:PC+Fiber Package Contents: 1 x Siren 1 x Charging Cable 1 x Strap Fixer 1 x English Manual 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.