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A pulse oximeter measures the oxygen saturation levels in your blood. It is a way to check how well the heart is pumping oxygen throughout your body. It also measures your heart rate. Type: oximeter Model Number: FPX-033 Instrument classification: Class II Warranty:1 year After-sale Service: parameters 2: SPO2, Pulse Rate work time: 50 hours Function:Auto power-off display Waveform OLED Display:Two Color Low Perfusion: ≤0.4% Batteries: AAA Certificate: CE FDA Memory: 2 x 90 Memory features -Reliable accuracy and durability pulse oximeter -Low power consumption,50 hours continuous to work. - Two Color OLED Display, four display modes. - 4-Direction Display adjustable. - Low voltage indicator, Real-time spot-checks - Low Per fusion ≤0.4% - Automatic power off when no signal - Small and light weight, convenient to carry - Widely used in hospital, home healthcare, oxygen bar, community medical center, alpine area, sports healthcare etc. packaging Selling Units: Single item Single package size: 15 X 18 X 20 cm Single gross weight: 1.000 g Package Type: One piece in one color box, or as you wanted.