Fingertip Pulse Oximeter (SP-O3)

Features
1. Low power consumption. 50 hours continuous to work.
2. Low perfusion≤ 0.4%
3. Low voltage indication.
4. Automatic power off when no signal. 5. Small and light weight, convenient to carry.
6. Pink and green, two fashion color optional.
7. Automatic power on and off without any key.