Features for Pulse Oximeter:-Color OLED display, simultaneous display for testing value and plethysmogram. -The display interface of OLED can rotate four directions whith six different display modes after pressing the power button for less than 0.5s.- Real-time spot-checks - Pulse waveform & bargraph display - Advanced setting for alarm - Functions of audio alarm and pulse sound - Automatic power off -Low power consumption down to 0.3%-50 hours continuous to work -Low perfusion ≤0.4% -Low voltage indicator -Widely used in hospital, home healthcare, oxygen bar, community medical centre, alpine area, sports healthcare etc.We have colors for blue, orange, Rosered and White. Please select the color during check out or leave message to us for the color you choose. If we don't receive your requirements for color, we will deliver oximeters in random color.