3 color: white&blue, white&yellow, gray&blue

- Simple operation, small & lightweight design, portable
- Low power consumption
- Display SpO2, PR, Pulse bar
- Low battery indication
- Auto power on / off
- Accommodates Widest ranks of finger sizes from child to adult
- Soft Silicone Padding, Strong Slip
- Resistant Clip, Non-Invasive, No pricking
- 2 AAA alkaline batteries