"SpO2%, PR are displayed on screen, simple and convenient operation
light, compact (the weight is 50g including batteries)
Low power consumption, two AAA batteries can be continuously operated for 30 hours
It can be used by a variety of sports enthusiasts, including mountain climbers, hikers, skiers, bikers, and others interested in measuring oxygen saturation and pulse rate
Easy to carry: Neck/wrist cord, 1 Year Warranty; 100% Satisfaction Guarantee."