1、This machine can be used to measure determines your SpO2 and BPM accurately 2、Adopts double color OLED display, can show six different display mode 3、It will automatically enter standby state after 8 seconds without finger in 4、Press the button on the machine to change the display direction 5、Low power consumption; Low batteries voltage indicator; Maximum 40 hours continuous measurement; Lightweight for carrying and easy to use This product is used to determines your SpO2 and BPM accurately. It will automatically enter standby state after 8 seconds without finger in. You can press the button on the machine to change the display direction. It is widely used in hospital, home healthcare, oxygen bar, community medical centre, alpine area, sports healthcare, etc. Features: 1. This machine can be used to measure determines your SpO2 and BPM accurately. 2. Adopts double color OLED display, can show six different display mode. 3. It will automatically enter standby state after 8 seconds without finger in. 4. Press the button on the machine to change the display direction. 5. Low power consumption; Low batteries voltage indicator; Maximum 40 hours continuous measurement; Lightweight for carrying and easy to use. 6. Comes with a lanyard for convenience as either a wrist strap or to be worn around the neck. 7. Widely used in hospital, home healthcare, oxygen bar, community medical centre, alpine area, sports healthcare, etc. Specification: Item Type: Fingertip Pulse Oximeter Material: ABS Item Color: As Pictures Shown Battery: 2 * AAA Batteries (Not Included) Display: LCD Power Consumption: <30mA Operating Temperature: 5℃-40℃ Storage Temperature: -10℃-40℃ Relative Humidity: 15%-80% on operation, 10%-80% in storage Air Pressure: 70kPa~106kPa Parameters Hemoglobin Saturation Pulse Rate Display 70-99% 30-240BPM Resolution 1% 1 BPM Measure Accuracy 2%(70%-99%) Unspecified(≤70%) 1 BPM Item Size: Approx. 5.6 x 3.9 x 3.3 cm / 2.2 x 1.5 x 1.3 inch Package Weight: Approx. 50 g / 1.8 oz Package Include: 1 * Machine 1 * Cord 1 * Manual Note: 1. Please read the manual carefully before use. 2. Use 75% density of medical alcohol to clean the machine surface. Use dry fabric with a little alcohol to avoid alcohol permeates into the device. 3. Please allow 1-3 cm error due to the manual measurement. Thanks for your understanding.