This is a protection case for your Hubsan X4 with a magnetic cover to keep the drone safe while stored or transported. There is the place to add up to 6 LiPo batteries and spare parts like propellers, USB card or propeller tool. Originally designed for the H107C model, the H107D and H107L models should fit too UPDATE : The cover now includes a slot for the U wrench to remove the props, a slot for a USB charger for 2 or 4 LiPo and a groove to wrap the USB cable.To keep the box closed, you just have to put a 4mm diameter neodym magnet in each holes (2 in the case and 2 in the cover)