
The Science of Champions
Elite athletes like Eliud Kipchoge, Kristian Blummenfelt, and Gustav Iden push the limits of human performance by optimizing every detail of their training. One of their key advantages? Oxygen tracking to track their physiological thresholds. Now, with Eir’s cutting-edge wearable technology, you can train with the same level of insight and control as the world’s best.
AUTOMATED THRESHOLD TESTING FOR UNMATCHED ACCURACY
Forget outdated lab tests and guesswork. Eir’s muscle oxygen sensor automatically determines your lactate thresholds (LT1 and LT2) in real-time, allowing you to train at precisely the right intensity for endurance, recovery, and peak performance. Whether you're a coach designing programs for elite athletes or an individual striving for your best, our automated threshold tests provide science-backed data without the hassle.

ADAPTIVE METRICS: SIMPLE OR DETAILED, YOUR CHOICE
Every athlete and coach has different needs. That’s why Eir offers an adjustable interface—see only the key metrics at a glance or dive deep into granular data when it matters most. Whether you’re tracking power output, heart rate, or real-time muscle oxygenation, our tech gives you total control over your training insights.


REAL-TIME GUIDANCE, SMARTER TRAINING DECISION
Winning comes down to making the right decisions in the moment. Eir’s AI-driven coaching provides real-time voice and smartwatch guidance, helping you adjust intensity, cadence, and effort based on your body’s actual performance. Train smarter, recover faster, and push your limits with confidence.
