The Quest sport pulse oximeter with perfusion index indicator and true color OLED display provides on spot SpO2 percentage of oxygen saturation in the blood and pulse rate with accuracy and ease. A true comprehensive product, quest sport pulse oximeter combines light weight and portability with multiple features including measurement of blood oxygen saturation, pulse rate, perfusion index and plethysmograph capabilities. Small and compact, it provides complete oximetry solutions while still able to fit in your pocket. The quest sport pulse oximeter is widely used by all ages in sports, athletics, during aviation and for health management in home diagnostic monitoring. In addition the quest sport pulse oximeter features the latest organic light emitting device OLED color display and plethysmograph capabilities. Displays, indicators and keys. SpO2 OLED display. Pulse rate OLED display. Plethysmograph OLED display. Keys power button and display button SpO2. Range 35% to 99%. Accuracy plus or minus 2% during 75% to 99%, plus or minus3% during 50% to 75%. Resolution plus or minus1% SpO2 alarm plus or minus90% low limit. Pulse rate range 30 to 240 accuracy plus or minus 2 or plus or minus 2% whichever is greater, resolution plus or minus 1. Pulse rate alarm 50 low to 120 high. Perfusion index. Range 0.2% to 20%. Accuracy plus or minus0.1% during 0.2% to 2%, plus or minus 1% during 2% to 10%, plus or minus 2% during 10% to 20%. Resolution plus or minus 0.1%. Power. Two 2 AAA alkaline batteries. Battery life 30 continuous hours of operation. Dimensions and weight. 2.6in x 1.4in x 1.3in 66mm x 36mm x 33mm. 2.1 ounce 60g including batteries. Operating and storage environment. Operating temperature 41 degree to 104 degree fahrenheit 5 degree to 40 degree celsius. Storage temperature 14 degree to 104 degree fahrenheit minus 10 degree to 40 degree celsius. Includes quest sport pulse oximeter, carrying pouch, lanyard, instruction manual, two 2 AAA batteries.