Seiko has created what seems to be a tiny pedometer-like device that can supposedly calculate one’s calories burned during a workout routine. The Slimstick features a built-in accelerometer, and algorithms that use its information, along with input from the user, to calculate one’s exertion in real-time.
Google translation of Slimstick info page…
(hat tip: Engadget)
Slimstick Exercise Companion from Seiko
April 28th, 2008 
Your information will never be shared with any third party.