Minolta Pulsox-1 Oxygen Saturation Monitor - New function to hold the final measurement on the display for 1min (approx) after the finger has been removed has been incorporated into the Pulsox 1’s design.Uses 1 x AAA battery which will provide 55 hours of continuous measurement. It has the ability to take very accurate measurements under a variety of less-than-ideal conditions such as outdoors or when the pulse is weak. .Dimensions (W x H x D) 35 x 33 x 56 mm. The weight including battery is 49g. Warranty period is 3 years. The Pulsox 1 is very robust and has been subjected to significant shock testing (100 times from the height of 1m). Automatic power up and backlight