Usually, it supports cards up to 32 GB, if your card over 32 GB, then it can't work properly. If you have any other questions, you can try to contact them. https://www.pardstore.com/contact-us/
Actually, you can search for some videos on YouTube. Does anyone know Wildguarder NB1? https://store.wildguarder.com/product/nb1-night-vision-binoculars/
You can try this site, they shipped from the US warehouse, which is expected to receive parcels in 1 week. I bought one last year. https://www.pardstore.com/product/pard-nv008p-lrf-digital-night-vision/