Lightweight, water resistant and ergonomically designed, the TuffSat lives up to its name and the 3-year warranty proves it. One of the smallest pulse oximeters on the market, the TuffSat was made for EMS. TuffSat is the only pulse oximeter with Plr™ (perfusion index) button which enables you to locate the best site for probe placement. Includes carrying case. *Tuffsat available in yellow only.