In 1995 Nonin Medical revolutionized pulse oximetry with the Onyx. Hundreds of thousands of people trust Onyx, the first self-contained digital fingertip pulse oximeter. Incorporating the electronics and sensor into one unit � the easy-to-use Onyx provides a cost-effective solution for spot-checks and short-term monitoring that is unparalleled in reliability and performance.

The SportStat is a very small, lightweight, pulse oximeter — a device that measures oxygen saturation (%SpO₂) and pulse rate.

SportStat can be used by a variety of sports enthusiasts, including runners, mountain climbers, hikers, skiers, bikers, and others interested in measuring oxygen saturation and pulse rate. It can be used outdoors in many conditions, including high altitudes, at high and low temperatures, and even in the dark.

Nonin Medical, the inventor and world leader in fingertip oximetry, has designed years of clinical experience into the Onyx^® II 9550. The electronics and sensor are incorporated into the world's smallest fingertip oximeter, providing a proven and cost-effective solution for spot-checks and short-term monitoring.

Onyx II 9550 — not just a new look. Superior performance and unparalleled reliability put vital signs within reach anywhere, anytime.