High quality, German-manufactured small digital pulse oximeter by Beurer. Measures arterial oxygen saturation (SpO2) and pulses (heart rate). Especially recommended for people heart failure, chronic obstructive pulmonary disease, bronchial asthma, etc. It is also suitable for those who do high altitude sports like mountain climbing, skiing or flying. Main features:- Easy to read.- Display has 4 different views.- Bright display light.- Pulse graph.- Automatic shutdown.- Case with strap included.- 2 x AAA batteries included.Technical information:- Dimensions (width x height - depth) 3.6 x 6.1 x 3.2 cm.- Weight: 57 g. Measurement: Non-invasive measurement of the arterial hemoglobin-oxygen saturation and the pulse in the finger.Measurement range: SpO2 0 - 100%Pulse: 0 - 254 pulses per minute.Accuracy: SpO2 70 - 100% } 2% Pulse 30 - 250 lpm, } 2 pulses per minuteWhy we like it:- Easy to use and not painful- Small and light. Easy to carry, ideal at home and for travelling- Feeling of securit