Reddit reviews Hyperkin "Admiral" Premium BT Controller for N64 (White) - Nintendo 64

Insert a storage memory card (not included) into the designated slot on the dongle and back up or transfer your game memory card save dataCompatible with original game memory cards, third-party game memory cards, and standard storage memory cardsBuilt-in lithium-ion battery lasts for 6 hours of gameplay and recharges with the included micro cableCompatible with all N64 models, as well as PC, Mac, iOS, and Android via BT