Automatic power off when no signal. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 2-Direction Display adjustable. Small and light weight, convenient to carry.
eBay
Make sure the battery is positive and negative. -----Use new AAA battery（ Not include ）.
eBay
It automatically powers off after 30 seconds of removing your finger to save energy. The results are displayed on a large LED display, providing you with convenient monitoring. The oxygen saturation of normal human arterial blood is 95-98% and that of venous blood is 75%.
eBay
Pulse curve display. Easy-to-read display with automatic screen rotation and adjustable brightness. Battery level indicator and automatic switch-off. Passkey function for secure data transfer. Includes free HealthForYou app to download.
eBay
eBay
new sealed
eBay
Just insert your finger and press the button, the reading will be displayed on the display within 8 seconds. It is suitable for all finger sizes-children to adults. Operation mode: button Applicable parts: hand.
eBay
【Easy to use and read】 One-button operation, no other. Viewing charts and numbers allows you to better understand your physical conditions. Gravity detection allows you to read comfortably in any position.
eBay