I use a PNY 256gb card that I got for $20 dollars and I still have 116gb free of space so even just a 128gb sd is fine but it does not matter, it's just preference.

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https://www.amazon.com/PNY-256GB-Elite-microSDXC-Memory/dp/B08F7Y4R1B?ref\_=ast\_sto\_dp&th=1