Q:How does the gb storage card expand to 128 gb? Yes
Or do we need to purchase bigger card? If you required If so, where? Best Buy
When the 8gb card is filled wtih 350 minutes (< than six hours sleep) can you delete data? Yes, I delete the files every 10 days aprox.
Download to a computer? Yes or delete
What inputs does monitor have? none, wireless.
I'm very happy with this Camera systems is very cheap and good quality.