Toothbright This includes the main unit and replacement head. Requires AAA alkaline batteries. Shipping will be via Yu-packet Post Mini. However, as it won't fit in the envelope, I will either fold or cut the top of the main unit's case to fit. Please be aware of this. The items in the photos are 500 yen for one set, 600 yen for two sets, 700 yen for three sets... up to five sets. Purchasing this as is will get you one set. If you want a different quantity, please comment.