“As a medical professional who performs respiratory testing and breath calorimetry in a hospital - as well as an exercise enthusiast - I am absolutely thrilled with Calibre. I think this is one of the most exciting innovations in personal wearables we have seen in years…”
— Karla S. (Beta Tester)
Clinical Exercise Physiologist
“It is awesome to have this sort of data. Clients ask me all the time how many calories I think they burn, and I can’t give them a concrete answer. Measuring caloric burn rate through breath like Calibre, that is the most accurate way to know.”
— Mike G. (Beta Tester)
Owner and Head Coach Fit4 Personal Training
"I have been devoted to exercise, nutrition and metabolic wellness a for many years, and I can say that Calibre is hands down the most accurate and insightful metabolic tracker to hit the market. It gives you real-time markers that, as far as I know, no other wearable can measure. And it's so lightweight and breathable, you could almost forget you're wearing it."
— Sam P. (Beta Tester)
Calibre™ can be used intermittently or for extended periods. The long battery life allows you to track your metabolics and breath throughout the entire day.
Simply pop out the sensing module, and then rinse the facepiece under warm water. The module can be separately wiped down using a damp cloth or sanitary napkin.
100% Safe &