MIO Shape, Shape Select/Petite and Classic Select/Petite
The calorie in value does not clear itself.  You must manually clear the value whenever you want to reset it back to 0 calories in. On your MIO Shape, Shape Select/Petite, and MIO Classic Select/Petite press the MODE button two times to get the “Cal IN” screen. Press and hold the SET/START button until ‘HOLD’ appears on the screen.  Keep holding until the watch beeps once and then beeps once again (total of two beeps) then release the button.  The display should read 0000.