Small batteries are most common: button cells such as LR44 and standard AAA cells appear in electronic and water-activated deep-sea toys. Many non-electronic figure replicas are listed as “No Battery Used.” Always check the product listing or packaging for the exact battery type and any included batteries.
Collectible figures typically list exact measurements and emphasize realistic, hand-painted detail. Listings often give heights in inches (for example, about 3½–6 inches) and describe anatomical painting and replica-quality finishes.