Zacurate 500BL Finger Pulse Oximeter - Blue BNIB

Zacurate 500BL Finger Pulse Oximeter - Blue This is a brand new Zacurate 500BL Finger Pulse Oximeter in blue, perfect for measuring your blood oxygen saturation levels (SpO2) and pulse rate quickly and accurately. Ideal for health monitoring at home, sports training, or aviation use. Product Features: Accurately determines SpO2 and pulse rate (PR) in seconds Easy and simple to use — just insert your finger into chamber Small, light, and portable design Low power consumption Bright LED display for clear readings Blue and white design with digital display Technical Specifications: Display Type: LED display SpO2 Measurement: Range: 0-99% Resolution: 1% Accuracy: 70-99%, ±2%; 0-69% no definition Pulse Rate Measurement: Range: 25-250 BPM Resolution: 1 BPM Accuracy: ±3 BPM Power: Two AAA alkaline batteries (required for operation) Operating Temperature: 0°C to 40°C Storage Temperature: -20°C to 60°C Measurement Principle: The device works by passing red (660nm) and infrared (905nm) light through your fingertip and measuring the absorption differences. Oxygenated blood absorbs infrared light preferentially, while deoxygenated blood absorbs red light preferentially. The sensor processes these readings according to Beer-Lambert's law to determine your SpO2 level. This is an essential tool for monitoring oxygen levels, especially useful for those with respiratory conditions, athletes monitoring performance, or individuals at high altitudes. Brand new in original packaging. #o