Thank you for viewing. Used about 4 times for mountain climbing. Operation has been confirmed with the power connected. It works without any problems. [Product Contents] ・GoPro HERO8 Black Body ・Non-functional battery (included for operational check) *The battery is unusable due to deterioration. Genuine batteries cost around 6,000 yen, and compatible ones are available for around 2,000 yen, so please purchase one separately before use. I used it carefully, but please understand that it is a used item before purchasing. Immediate purchase is welcome. Thank you!