EZMAX Sonic Electric Toothbrush With 4pcs Toothbrush Head and Base This battery operated revolve classic electronic toothbrush is light and fashion. It is great for using at home. The base can hold additional 3 brush heads, so it is perfect for share in a family Frequency: 6,000 turns per minute Power Supply: 2 AA battery (not included) Package includes: 1 x Base, 4 x Toothbrush Head Material: Nylon/ABS/TPE