Fingertip Pulse Oximeter Heart Rate Monitor with HomeLab app to check oxygen saturation (SpO2) and pulse rate. This device is not intended for medical use. About the product. The product consists of a fully functional pulse oximeter and an app for data storage and analysis. The pulse oximeter is connected with a smartphone or tablet via Bluetooth .Pulse oximeter device: model BM1000C. Blood oxygen saturation, SpO2: range 35-100%; accuracy ±2% (80-100%), ±3% (70-79%). Pulse rate: range 25-250 BPM; accuracy ±2 BPM; resolution 1 BPM. Bluetooth: 3.0 and BLE 4.0. Battery: 2 x 1.5V AAA. Operation voltage: 2.2 - 3.4V. Operation environment: temperature 5°C - 40°C; humidity 15% - 80%; Atmospheric pressure 86Kpa - 106Kpa. Size: L 2.3” × W 1.3” × H 1.2”. Weight 1.8 Oz including batteries. The app: during every measurement the app records a digital pulse wave for future processing and storage.