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  • Calibre Biometric Tracker

    Calibre is a wearable biometric tracker that analyzes your breath in real-time, bringing unprecedented insights into your performance, health, and wellness. It accurately monitors and tracks metrics like VO2, RMR testing, and FatOx levels with Lab accuracy at a fraction of the cost of traditional metabolic carts.

    Free shipping across the US.

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    Try Calibre completely risk-free

    Use Calibre for a month, and if you don't like it, we will take it back, no questions asked!

    If you are in the US, free shipping is always an option!

    We're confident in our product. If anything happens or something isn't up to par, let us know and we'll make it right!