Thanks for your insterst in our item. Inside of this lamp, it is a led light panel not bulb. Here is a picture to show you how it led panel looks like:

If you need to replace the led light, you can buy this kind of light panel in same size and watts as we listed on manual or advertisement. Thank you.

Thank you. Does this flush mount already include the led light panel or do I need to purchase it separately? Thank you.

Thanks for your reply. The led panel has already mounted on the light. You do not need to purchase it separately. If the light panel broke after long term use, you can buy the similar replacement panel to do replacement. Thank you.

Can it work simply without the remote? using the wall switch