Santamedical SM-240 OLED Finger Pulse Oximeter

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 TECHNICAL SPECIFICATIONS: Display-->Type : LED, Parameters : SpO2, PR, Pleth bar., Information : low power ::SPO2-->Measure Range : 35-99%, Resolution : ±1%, Accuracy : 75%-99%:±2, 50%-75%:±3, 0%-50%:unspecified::Pulse Rate-->Range : 30-254 BPM, Resolution : ±1bpm, Accuracy : ±2bpm::Battery--> Type : 2 AAA Alkaline batteries or rechargeable, batteries Power Consumption More »