Logicool (Logitech)'s Wireless Kana Keyboard + Wireless Mouse Combo
(requires 4 double-a batteries, 2 for each component)

-3 year battery life for keyboard and mouse
-ergonomically-incaved keys and cushioned palm rest
-media controls and LCD status icons above keyboard for battery, caps lock, mute etc.
-1 wireless receiver for both mouse and keyboard
-encrypted 2.4GHz high frequency wireless technology
-includes Logicool SetPoint which allows control over mail, web, calculator and other functions
-includes 2 sets of feet for high, low and flat angles
-mouse's compact ergonomic design increases efficiency:
   -3 side buttons
   -regular or high-speed scroll, zoom capability
-additional mouse features:
   -high-speed laser sensor
   -battery indicator

(packaging is in Japanese)

This product (and most good kana keyboards) is not available for retail sale in the United States. I bought this in Tokyo for $100 but never used it realizing that a kana keyboard was not for me. It is in it's original packaging, unsealed but never used, showing no imperfections or wear.

Wireless Desktop MK710 - Logicool
Amazon.co.jp： LOGICOOL ワイヤレスデスクトップ MK710: パソコン