Specification: Widely Compatible: The drone dropping device suitable for most drones like for Mini 3 Pro, Mini 3/ Mini/Mini 2/Mini SE/Mini 2 SE/ 2/Air 2S/ 3/Classic/Cine/Spark/ 2 Pro/Zoom/MavicPro/Avata/Fpv/ X8SE/Phantom 3/4 Pro/Holystone HS720/720E/720G/HS440/ F11S drone, etc. It is almost suitable for drones with a load weight of over 100g. Easy to Control: One-button operation through the 2.4G remote controller. The remote control distance is 150 m. The length of the Buckle strap is 30cm, Please select based on your drone size. Quick to Assemble: Buckle installation not damage the drone body. Simply thread a Buckle strap into the adjuster hole, adjust it to a suitable position according to the size of your drone, and fix it (the strap avoids the drone bottom sensor). Hang the matching sling onto the thrower lock to load the item (hang it according to the weight of the drone). Widely Used: You can send wedding rings, gifts, flowers to your friends, family and lovers on any