Listings show battery-powered kids' toothbrushes using a single AA alkaline battery in at least one item; rechargeable models use a built-in lithium‑ion battery (not a universal removable cell).
Small toothbrushes typically use soft or extra-soft bristles. Common materials shown include nylon, micro-fiber, and silicone (the latter often used for training brushes).
Listings show both compact (small) heads and full heads for kids' toothbrushes; some product descriptions specifically label heads as 'small' or 'compact' for smaller mouths.
Listings cover infants and toddlers through young children. Suggested age ranges include 6 months and up, 0–2 years, 2 years and up, and 3 years and up, with several items listing specific baby or toddler ranges.
Common features include ergonomic, non-slip handles sized for small hands; built-in two-minute timers on some models; compact/small heads for smaller mouths; and playful characters or designs to encourage brushing.