Oximeter built-in sensor.

Simultaneous display of numerical values and waveforms of SpO2 as well as heart rate.

Ability to present 6 different ways of data.

10 different levels of brightness adjustment.

A power switch with automatic switch off of the appliance if it is not used.

Function with 2 alkaline AAA batteries.

It comes in black, with 2 alkaline AAA batteries and a strap and a power cord.