It's very difficult to get them out of the cage to change the battery and memory card every time. It is a screw type on the side, after a while the plastic piece will move to the side which is to protect/prevent damage from the HERO 7's black screw inside the cage. Of course, this will damage the HERO 7 black with every press. Do not buy this product, it will damage your gopro HERO 7 black - I only use 7 black, don't know about the rest.
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