Please note this product contains button batteries (secured inside the battery compartment with a screw). Button batteries are unsafe if swallowed.
Batteries included. This product uses three AG10 button cell batteries. AG10 Button Batteries are also known as 389, 390, 189, LR54, GP89A, L1130, LR1130, L1131, RW89, V10GA. Batteries are a necessary part of our books. Quality of the sound is very dependable on batteries condition. Batteries should be changed when sounds mix, distort, or become otherwise unintelligible as batteries weaken.
Suitable for ages: 6 months+