Free 2 Batteries inside the pouch.
* Accurate, reliable, and fast reading proved by clinical testing and consistent results.
* On large digital red LED displays, oxygen saturation results can be received in 8 to 10 seconds.
* Blood oxygen saturation degree, pulse counting | simple bar chart shows you the blood oxygen saturation and pulse strength results.
* Portable and easy to use. Lightweight, compact, easy to operate and carry, at home or in the open can get results.
* It is suitable for all ages. Intelligent design can accommodate a variety of finger sizes, use finger chamber, excluding emulsion of silicone materials.
* One-key operation, simple and comfortable to use
* Use AAA batteries to save energy for up to 30 hours