Finger Pulse Oximeter PULOX PO-300

This is a German packaged version of the CMS-50E with all the information on the unit displayed in English.The unit came with a German langauge manual in the storage tin and a photocopied instruction manual with additional information, again in German, in the box. The description says there is an English manual.However it came with a European 2 pin USB charger.The unit works as described and I'm glad to see that I am alive! The overnight recording worked well and surprisingly the unit stayed on my finger overnight although it would be easy to dislodge it. The recording allows you to set a starting reference time when you activate the function.So if you are willing to go online to find English langauage versions of the manual and have either a standard UK USB charger available (5V 1000mA) or can use your pc for charging it works fine.The 4 star rating is due to the errors and omissions in the description.