[ Cycling ] Open Question : What features do you prefer in a cyclometer?

Lets say that you have $30 to spend on a cyclometer. At this price, of course, we are ruling out cadence but not much else. What are your 5 top preferences from this list: wireless back lighted display (for night riding) +/- comparator (above/below average speed) battery replacement without losing data elapsed time (travel time) large display average speed maximum speed day/date time temperature calorie counter (estimate) weak battery indicator water resistant/waterproof case color (black, silver, red, blue, white) movable from bike-to-bike (dual wheel settings) extra mounting hardware (to use on 2 bikes) This is the time to have your 2 cents worth in and shape the destiny of new products for 2014/15!

Source: http://answers.yahoo.com/question/index?qid=20130204055815AA3huIR

Kanye West Christina Aguilera James Franco