Sell Finger Pulse Oximeter Blood Oxygen Saturation best price

Features: - Assorted color - Reliable accuracy and durability - Two Color LED Display, four display modes. - 4-Direction Display adjustable. - Low voltage indicator, Real-time spot-checks. - Low power consumption,50 hours continuous to work. - Low Perfusion ≤0.4% - Automatic power off when no signal - Small and light weight, convenient to carry