Features: 
Color l-ed display screen to display content clearly.
Set alarms and beeps as needed, warn when the measured value exceeds the defined value.
The silicone finger mold is comfortable to use and does not overwhelm fingertips.
Low energy consumption and ecologically friendly, automatic shutdown after 5 seconds when not in use.
Light weight and easy to operate.

Specifications:
Material: P-lastic
Color: Blue, Black (optional)
Display Type: OLED
SpO2: 
   Measurement range: 0%-100% 
   Accuracy: 70%-100% ±2% 
PR:
   Mesurement Range: 30-250BPM
   Accuracy: ±2BPM or ±2% (the larger one)
Cell: 2 x AAA 1.5V alkaline cells (not included)
Item Size: 57 * 32 * 31mm / 2.24 * 1.26 * 1.22in
Package Weight: 55.3g / 1.95ounces
Package Size: 90 * 60 * 37mm / 3.54 * 2.36 * 1.46in

Packing List:
1 * Fingertip Oximeter
1 * Lanyard 
1 * English User Manual