Upgraded Double Release Thrower Servo Controlled Dropper Device For DJI Phantom 4/4 PRO Series Drone Dropping System Descriptions: Double Release Thrower Servo Controlled Dropper Shinkichon Pelter Device for Phantom 4/4 PRO Series Drone Dropping System Easy to Control:One-Click Operation with the Remote, the Remote Range of Delivery Device is the Same as the Range of the Drone Remote. Minimalist Constuction Light Weight, Convenient Size, Easy-Installation, No Nneed to Redesign Your Drone, with Bult-in Battery, Can Continually Open and Close for 100+ times on One Charge. Application Throwing Fish Bait, Drone Fishing Line Release, Flower Dropping, Advertising, Wire Leading and Guiding, Parties and Celebration, Proposal, Search and Rescue (You Can Use Play-road Device to Cast a Life Vest Far Away in the Sea). Phantom 4/4 PRO Series Advanced Airdrop is designed to provide a light weight and easy-to-use dropping experience. It allows you to drop anything (Didt Exceed the Max Load Weight) you want from your drone and at any range your drone can reach. This Device Alone can hold up to 1-1.2kg play-load, but the Mavic pro drone can probably lift only 500gr to keep it safe and usable, you can probably lift more than that but it's not recommended. Specifications Battery Capacity: 3.7V 400MAH Max Loading weight: within 500g recommended (Depends on your drone's maximum carriage weight) Battery Operating Time : 410 hrs (Standby) / 3.5 hrs (Continuous movement) Battery Charging Time : Less than 60 minutes Chargeable Input : USB 5-pin Operating Temperature: -4 to 122 Note: Drone is NOT included you can probably lift more than that but it's not recommended. Before using it on your drone, please test the play-road by opening and closing the clip pin , to make sure it works smoothly when drone flying. The Target will be difficult to reach under strong wind than windless days. Package: 1x Set of Phantom 4/4 PRO Series Drop Double Release Device Kit