Battery life depends on usage, but the gentle LED projection is designed to be energy-efficient for extended play sessions.
Yes, you can adjust image size by raising or lowering the projector arm - higher placement creates larger projections.
Any standard drawing paper works well, or you can trace directly on the built-in drawing board surface.
The slide discs are made from durable materials designed for children's use, though adult supervision is recommended for ages 3+.
The kit includes 6 themed discs with 48 total images covering various subjects like animals and vehicles.