Product details:
Item specifics
Brand name: EaseAi                                       Item Type: Finger Pulse Oximeter
Material: ABS                                                    Size: 55mm(L)*30mm(W)*30mm(D)
Application: Finger                                           Commodity Quality Certification: CE
Model Number: C53                                        Power: 2 x AAA 1.5V alkaline battery
Display Modes: 6 directions                           Color: Green
Parameter: SPO2 PR                                      Weight-approx: 58g
Warranty time: 5 years    
Attention: the size and weight only refer to the size and weight of the product itself.  
Product Description:
Because of the aviation restrictions, batteries are not included in the package, please use   alkaline battery to run it.  
Brief Device Description:
 the Pulse Oximeter, based on all digital technology, is intended for noninvasive spot-check measurement of functional oxygen saturation of arterial hemoglobin (SPO2). Advanced DSP algorithm can minish the influence of motion artifact and improve measurement accuracy of low perfusion.
the Oximeter can be used to measure human Hemoglobin Saturation and heart rate through finger. the product is suitable for family, hospital (including clinical use in internist/ surgery, pediatrics, etc), Oxygen Bar, social medical organizations, physical care in sports and etc.
Product Features
Lightweight for carrying and Easy-to-Use.
Small in size and light in weight, low power consumption.
OLED display, simultaneous display for testing value and plethysmogram.Manually adjust interface for 6 directions.
Backlight can be adjusted from 0 to 10 level.
Automatically standby or sleep.
Low battery indicator.
Specifications
Display Mode: OLED display
SpO2
Measuring Range: 35%-100%
Resolution: 1%
Accuracy: 2% (80%~100%), 3% (70%~80%), unspecified (<70%)
Pulse rate (PR)
Measurement range: 30~250 BPM
Resolution: 1%
Accuracy: 2BPM
Power: 1.5V (AAA size), alkaline battery x 2
 Working current: < 30mA
Automatic power-off: Automatically power off when no signal in the oximeter for more than 8 seconds
Dimension & Weight: 57 (L) 31(W) 30.5(H) mm, 54g(without batteries)
Optional Color
Green
Package Content
- 1 x Finger Pulse Oximeter
- 1 x Lanyard
- 1 x English user manual
- 1 x Carrying case
Operation
Install battery
Installing two AAA batteries into battery cassette in correct polarities and cover it.
Start the Pulse Oximeter
Put one of fingers into rubber hole of the oximeter (it is best to put the finger thoroughly) with nail surface upward, then releasing the clamp.
Press the key, oximeter will automatic standby or go asleep after 8 or 16 seconds without finger in.
Attention: this product is not suitable for infants, only for children over 6 months old and adults.