Operation of the product is simple and convenient.
　　* The product is small in volume, light in weight (total weight is about 50g
　　　including batteries) and convenient in carrying.
　　* Power consumption of the product is low and the two originally-equipped two
　　　AAA batteries can be operated continuously for 30 hours.
　　* Low voltage warning will be indicated in visual window when battery voltage is
　　　so low that normal operation of the Oximeter might be influenced.
　　* The product will automatically be powered off when no signal is in the product
　　　for more than 8 seconds.