Micro-D USB Data/Charging Cable Replacement For Wellue Adult’s O2 RingThis Replacement Micro D USB Data Charging Cable allows you to charge your device and upload all your measurement reading data to your computer. Compatible Replacement: Wellue Adult's O2 Ring

The matte finish gives the piece a modern and mysterious look

it fits comfortably on the thumb and is barely felt when you are in place

Maintain tracking even when disconnected with 4 sessions being stored automatically in the device

and it does not shake while you write

DOUBLE-SIDED WHITE BOARD: The double-sided feature allows two people to use it or to record different content at the same time

not Kardia Mobile brand

Professional Software:  100% Free APP & PC software providing FULL graphic sleep reports and health data trends over time

Suitable for sensitive teeth

You can monitor your data every morning and use it to discuss your concerns with your health professional

who are interested in measuring SpO2 levels and heart rate over the long term

Comfortable Soft Ring Sensor: Designed with the softest and lightest materials for absolute comfort during overnight use adapting to personal finger size

completely frees your finger