Solar-Powered Keyboard by Logicool

*This product doesn't seem to be made-in-Japan nor strongly related to Japan, but it is really cool :)

The list price is 8,480 JPY, but Keitai Watch reported it cost less than 6,000 by on-line shopping.

Keitai Watch: 2013/6/17 06:00
http://k-tai.impress.co.jp/docs/column/stapa/20130617_603769.html
Logicool Wireless Solar Keyboard k760 (in US site)
http://www.logitech.com/en-us/product/wireless-solar-keyboard-k760-for-mac?crid=1221
Logicool Wireless Solar Keyboard k760 (in JP site)
http://www.logicool.co.jp/ja-jp/product/wireless-solar-keyboard-k760-for-mac?crid=26