With that in mind, we'd suggest getting an extra GoPro battery and the SanDisk microSD card. A good microSD card is undoubtedly one of the best GoPro accessories: you'll want one that has a high storage capacity and a fast write speed suitable for recording 4K video. While these might not sound very interesting categories, they are pretty important - after all, you don't want to run out of juice or storage space when you're halfway up a mountain. Next, we'd think about power and storage.
It even comes with a case not bad for less than $30. This has just about all the straps, mounts, floats, poles, and attachments you could want for connecting your GoPro to your body, your car, your bike, your motorcycle, and much more.
When picking the best GoPro accessories, the first place we'd look is the Neweer 50-in-1 accessory kit. Many of the best GoPro accessories listed here will work with all models of GoPro cameras, however, there are some that will only work with specific versions we've noted their compatibility in each case.