YABF - Yet Another Bike Field

Hi,

I currently considering a bike field and I have designed an early mockup (colors and design are far away to say, that it is fixed). The outer circle represents speed. The inner circles wil be filled up with:
- Left upper circle: Cadence - The plan is to show the current cadence and average cadence by pointing to colored cadence zones (what do you think: are exact digits needed or is it enough to show the zone)

- Right upper circle: ToD and in digits within the circle: caloried burned

- Left lower circle: Direction and direction to start

- Right lower circle: heart rate - The plan is to show the current heart rate and average heart rate by pointing to colored heart rate zones (what do you think: are exact digits needed or is it enough to show the zone)

The digits in the middle part shows distance and current timer time.

https://www.dropbox.com/s/pr551rhsy43hjke/YABF.JPG?dl=0