Live Streaming to Apps

Pacing decisions happen mid-interval, so the number has to appear right then.

Motion-Tolerant Sensing

Running and cycling shake a sensor that reads cleanly while you sit still.

Sweat and Wash Resistance

Straps soak through every session and go in the laundry afterward.

Battery for Long Sessions

A long ride or a marathon block outlasts anything charged for a short workout.

Training Zone Feedback

Alerts for drifting out of a zone are easier to act on than raw numbers.