SM-1100B Finger Pulse Oximeter is an affordable and accurate way to check pulse rates and blood oxygen saturation levels. Self-adjusting finger clamp plus simple one-button design allows for easy operation. Small portable size makes it easy to handle and carry. Helpful for athletes and pilots to obtain quick and accurate oxygen saturation readings. Pink Deluxe features include an easy to read bright color OLED display, 30+ hours of continuous monitoring on one set of batteries. Integrated SpO2 probe and processing display module plus Pulse Rate and Plesthymograph wave that measure pulse strength. Battery level indicator. Battery level indicator. Auto power off. Low power consumption on 2 AAA batteries.