Description:The pulse oximeter, based on all digital technology, is intended for noninvasive spot checks measurement of functional oxygen saturation of arterial. It is made for smart living, small in volume, light in weight.Features:Easy to read and color displayLightweight for carrying and pulse curve displayAdjustable display brightness and automatic switch-offVisual alarm function, real-time spot checks and low battery voltage indicatorStandard two AAA 1.5V batteries that support more than 20 hours continuous workSuitable for sports at high altitudes such as mountaineering, skiing and aviation sportsParticularly suitable for person with heart failure, chronic obstructive pulmonaryInclude: retaining strap and belt pouchUsage:Install 2 AAA batteriesPut one finger into rubber hole of the oximeter with nail upward, then release the clampPress power button to turn the pulse oximeter on. The oximeter will automatically be powered off when no finger in the device for longer than 16 secondsRead correspondent data from display screenNotes:Normal SpO2 values vary between 95 and 100 percent. If your SpO2 value is below 95 percent, that could be a sign of poor blood oxygenation, also called hypoxiaWhen power off, you can still see the SpO2, battery bar and PR bpm graphics on the screen without actual numbersOperating Temperature: 5 - 40 Deg.C / 41 - 104 Deg.FStorage Temperature: -10 - 50 Deg.C / -14 - 122 Deg.FRelative Humidity: 15 - 80 percent, non-condensingOperating Current: Less than 30mAProtection: IPX 4Item Type: Blood PressureFor (Blood pressure): FingerVoltage (V): 3Display screen : LEDWristband Range: 38cmMaterials: ABSPackage weight: 0.127 kgProduct Size ( L x W x H ): 6.00 x 3.50 x 3.00 cm / 2.36 x 1.38 x 1.18 inchesPackage Size ( L x W x H ): 9.50 x 9.00 x 4.00 cm / 3.74 x 3.54 x 1.57 inchesPackage Content: 1 x Fingertip Pulse Oximeter, 1 x Retaining Strap, 1 x Belt Pouch, 1 x English Manual