Childrens Hapika First Set, Rounded bristles & Compact Head for Childrens Teeth, Gums Friendly, Set Includes: Main Body, Case, 8 Replacement Brushes, 1 AA Battery, Power Supply: DC 1.5 V 1 x AA Battery, Size: Length 6.8 inches (173 mm) (including brushes), Width 1.0 inches (25 mm), Depth 0.8 oz (21 mm) Weight: 2 oz (60 oz (60 oz (60 g) (60 g) (60 mm) (60 mm) (60 mm) (60 mm) (60 mm) (60 mm) (ABS (60 mm) (ABS (60 mm) (brushes, including batteries); Main Material: ABS (brush) Polypropylene (brush) 1 piece approx. Months (if used twice for 3 minutes a day), Made in Japan.