New 2009 "Japan-only" (a.k.a. JDM) model available only via Earthority.com outside of Japan. When your room ambient light level is insufficient, when your toothpaste foam obstruct enough light to render the ion generation less than desired, this suped-up model is for you.

World's first toothbrush that incorporates an integrated solar panel to supercharge negative ion generation thus it's usable even in dim light condition or when heavy foaming (due to toothpaste used) is present. This is not just the newest model sold in Japan, it's the ONLY, next generation model sold in Japan.

It retains all the benefits of the current export model but with a more powerful (& forgiving) ion generation due to its solar panel that transmits additional electrons through a lead wire.

Photocatalysis (TiO2) + Negative Ions + Solar-powered + toothpaste-less brushing. This is the greenest & most high-tech that a toothbrush can get.