Finger Pulse Oximeter SM-110 with Carry Case and Neck/Wrist Cord

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 and is not for medical use. 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 : less than 30Ma, Voltage : 2.6-3.6V::Environmental-->Operating Temperature : 0'C-50'C, Storage Temperature : -10'C - 60'C, Operating Humidity : 15%RH - 95%RH, Storage Humidity : 10%RH - 95%RH