SB210 main feature is that it has ACT (Artery Check Technology), Bluetooth function connectivity with ROSSMAX App (able to see PPG graph, and share measurement results to anyone who uses the ROSSMAX App as well) and it has alarm as well when the SPO2 results shows 90% and below.

• Artery Check Technology (ACT) embedded
• Bluetooth® Transmission
• Instant readings of SpO2, pulse rate and artery condition in 1 minute
• Shielded Design blocks Ambient Light
• Biocompatibility & Anti-Allergic Design
• Pulse Strength Indicator
• Two way, two color OLED display
• Cord attached

F.A.Q
Q: May I know what is the difference between SB210 and SB220?
A: Rossmax SB210 has these 2 extra features over SB220

1. SB210 has extra feature (ACT) *Artery Check Technology*, it's a patented technology by Rossmax, to screen for arterial stiffness. it reads in 6 levels, ranges from level 1 - good condition to level 6 - poor condition, suitable to screen for hypertensive, diabetic, obese patients, or elderly patients that tend to have stiff blood vessels.
2. SB210 has Bluetooth feature enable to connect to the FREE Rossmax Healthstyle App which enables to sync the SB210's spo2, pulse rate and ACT readings into the smartphone's Rossmax App, it stores unlimited memories and able to share to others who use the Rossmax App too.