Why buy a pulse oximeter?
Buy a rechargeable oximeter band which you can wear all the time and which has other features as well as below:
Blood Oxygen monitor
Blood Pressure  monitor
Heart  rate monitor
Waterproog IP67 rating
Sleep  monitor
Sedentary  reminder
Call/message notifications
Raise to increase brightness
Calories monitor
Real time Weather  details
Multiple sports mode
 
Dispatch: Dispatched by next working day
Above price includes 18% GST