* OLED display.

*SpO2：Measurement range: 70~99%Resolution: ±1%Accuracy: ±2% (70%~99%)unspecified (<70%).

*Pulse rate: Measurement range: 30~240 bpmResolution: ±1%Accuracy: ±2bpm or ±2% (select larger)Low Perfusion ≤0.4%.

*Power：1.5V (AAA size)alkaline battery x 2 Supply voltage: 2.6~3.6V.

*Working current：≤30mA.

*Automatic power-off：Automatically power off when no signal in the oximeter for more than 8 seconds.

*Dimension & Weight: 90(L) × 62(W) ×42(H)mm65g(without batteries).