| Part No. | TD-8255A(No Data Transmission) / TD-8255B(Bluetooth) |
| Communication | Bluetooth(TD-8255B) |
| Dimension | 63 (L) x 35 (W) x 32 (H) mm |
| Weight | 40g (without battery) |
| Heart Rate Range | 30 ~ 250 beats per minutes (bpm) |
| SpO2 Range | 0% ~ 100% |
| Accuracy (SpO2) | 80%~100% ±2 digits |
| Method | Dual wavelength LED |
| Perfusion Index | 5-bar indicator |
| Accuracy (Heart rate) | ±1 bpm or ±1% whichever is greater |
| Power Source | 2 x AAA |
| Time to power saving | 15 seconds after removing finger |
| Backlight | LCD backlight |
| Operating Temperature | 10ºC ~ 40ºC |
| EMC Standard | IEC60601-1-2 |
| Safety Standard | IEC60601-1 |
| Performance Standard | ISO80601-2-61 |
