Specifications:It can be used for fishing/wedding/romantic proposal (carrying the ring), advertisement delivery, etc.1 set of quadcopter release and drop device air-dropping system are accessories for DJI Mavic Air 2 drone.The built-in battery needs USB charging, with quick release, and one charge can open about 500 times, one-key control from for DJI remote control.The device is lightweight and safe, and it will neither increase the burden of the quadcopter not damage it, and is easy to install and disassemble.The tripod at the bottom won't affect the propeller and sensor. Type: Quadcopter Delivery DeviceMaterial: ABSLoad Bearing: 500g (Maximum)Battery: Built-in 150mAh Battery (Included)Standby Time: about 12 HoursCharging Time: 1.5 HoursCompatible with: for DJI Mavic Air 2Features: Easy to Install, Rechargeable, Fishing Bait Releasing, DurableSize: 9.7cm x 8.5cm x 5.3cm/3.82" x 3.34" x 2.08" (Approx.) Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement. Package Includes:1 x Quadcopter Delivery Device1 Set of Mount Stands5 x Rubber Band1 x Bandage1 x Light Sensor Connection Cable1 x USB Charging Cable1 x Ring (Quadcopter Not Included)