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 throw one . 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 . 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 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.