Can mount two 82-2 or shells with a diameter less than 50mm. Built-in battery, can work independently, type c port charging. Comes with straps that can be fixed on the fuselage. Workflow:When taking off, the lights are off. When throwing, turn on the LED light. The thrower will throw one ammunition. After seeing that the throw is successful, you need to turn off the LED light as soon as possible and turn on the LED again to throw another ammunition. fit:for Mavic2 version, the for Mavic3 model types are ZD1-S1-V1, ZD1-M2-V1, ZD1-M3-V1 (The printed words may be different, which will not affect the use of the product) Colour:As Shown Material:Plastic Package Contents: 1 x Single-shot Thrower 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.