The product line of GoPro is very simple. The main product line is GoPro HERO (with latest to be 7 generation)

• GoPro HERO 6 (35,742 JPY) https://www.amazon.co.jp/dp/B0761Q2CG5
• GoPro HERO 7 (48,848 JPY) https://www.amazon.co.jp/dp/B07H8YDBJ2

Both are capable of shooting video up to 4K. Battery life is usually 1.5-2 hours for continuous shooting. You can record while charging.

There is also an entry level camera which can shoot up to 1440p.

• GoPro HERO 2018 (27,500 JPY) https://www.amazon.co.jp/dp/B07B4TQMX8

Additionally, there is a GoPro Fusion with which you can shoot 360 video. https://www.amazon.co.jp/dp/B07V3FMTVM