X Mark I

The X Mark I Mouse is a wireless laser mouse also doubles as a calculator and a numeric keypad. Bluetooth 2.0 connections, and  1,200dpi responsive sensor. Plays with both OS X and Windows. Loses points for the Scroll wheel instead of the necassary tracker ball or multi touch.

£39.99 / €48.99 / $63,

Canon’s X Mark I Mouse triples as calculator, numeric keypad, fame attractor — Engadget.