Features: 
<br />-CE &FDA approved
<br />- Measure SpO2 and PR accurately
<br />- Color OLED display SpO2 and PR, Pulse waveform and bargraph display
<br />- High brightness full color OLED can be used even in dark night
<br />- Four viewing angles and six display modes
<br />- Four levels adjustable brightness
<br />- Low battery voltage indicator
<br />- Automatic power off when signal is not available for 4 seconds
<br />- 2 AAA batteries support 30 hours continuously
<br />- Mini size, light weight, convenient to carry
<br />- Widely used in hospital, home healthcare, oxygen bar, community medical centre, alpine area, sports healthcare etc.  
<br />Specification: 
<br />Display  64K color OLED  
<br />SpO2  Measurement range: 35-99%
<br />Resolution: ±1%Accuracy: ±2% (70%-99%), unspecified (<70%)  
<br />Pulse rate  Measurement range: 30-255 bpm
<br />Resolution: ±1%
<br />Accuracy: ±2bpm or ±2% (select larger)  
<br />Power 1.5V (AAA size) 
<br />alkaline battery x 2
<br />Supply voltage: 2.6~3.6V  
<br />Working current  ≤30mA  
<br />Interference resistance against ambient light  Deviation between SpO2 in nature indoor lighting condition and in dark room is less than ±1%  
<br />Dimension & Weight  57 (L) × 31(W) × 32(H) mm
<br />50g (with batteries)  
<br />
<br />Package Content:
<br />- 1 x RPO-50D Fingertip Oximeter 
<br />- 1 x Lanyard
<br />- 1 x English user's manual
<br />- 1 x Pouch 
<br />We will carefully test every item before shipment.