Features:

Two parameters : spo2 , pulse rote

Four direction adjustable

Low voltage indicator

Automatically power offin 8 secands when there is no signal

Small in volume , light in weight and convenient to carry

Display type : oled display

Spo2:

Measurement range : 70% ̴ 99%

Accuracy : ±9% on the stage of 80  ̴ 99%

Resolution : ± 1 %

Low perfusion : ≤0.4%

Pr:

Measurement range : 30bpm ̴ 240bpm

Accuracy : ± 1 bpm or ± 1 % ( the larger one )