ROSSMAX FINGERTIP PULSE OXIMETER SB100 MMD REG NO. GB935101168218 %Spo2 & Pulse Rate - Big LED screen display for easy reading Shielded Design blocks Ambient Light Biocompatibility & Anti-Allergic Design One-touch ON/OFF key Pulse Strength Indicator Cord attached - Economical & portable health management tool Ideal for oxygen therapy assessment Ideal for sleep apnea screening Ideal for health management Ideal for spot-check & continuous monitoring