Xiaomi Smart Air Purifier 4 with True HEPA and Real-Time PM2.5 Display vs Dr Morepen BP-15 Automatic Blood Pressure Monitor
What separates them
These two differ on 7 recorded specifications. The Xiaomi Smart Air Purifier 4 with True HEPA and Real-Time PM2.5 Display is ₹10,500 dearer.
Xiaomi Smart Air Purifier 4 with True HEPA and Real-Time PM2.5 Display vs Dr Morepen BP-15 Automatic Blood Pressure Monitor
Xiaomi
Xiaomi Smart Air Purifier 4 with True HEPA and Real-Time PM2.5 Display
₹11,999
CADR is the only number worth comparing between purifiers, and 400 cubic metres per hour is genuinely high for the price -- it is the figure that decides how fast the room actually clears.
Full details →
Dr Morepen
Dr Morepen BP-15 Automatic Blood Pressure Monitor
₹1,499
Included because it is what most people actually buy, and because the gap it illustrates is the most useful thing in this department.
Full details →Who the Xiaomi Smart Air Purifier 4 with True HEPA and Real-Time PM2.5 Display is for
Buy it if: Anyone in a north Indian city wanting real particulate clearance in a large room.
Avoid it if: Anyone unwilling to budget roughly Rs2,000 a year for filters -- a clogged filter is worse than none.
Who the Dr Morepen BP-15 Automatic Blood Pressure Monitor is for
Buy it if: Anyone wanting a rough at-home trend at the lowest price, who understands the reading is indicative.
Avoid it if: Anyone whose medication is adjusted on home readings. Buy a validated monitor instead.
Specifications, side by side
7 of 17 rows differ. Differences first.
| Specification | Xiaomi Smart Air Purifier 4 with True HEPA and Real-Time PM2.5 Display | Dr Morepen BP-15 Automatic Blood Pressure Monitor |
|---|---|---|
| Price | ₹11,999 | ₹1,499 |
| Clinical validation | CADR rated under GB/T 18801, the Chinese national standard | Not clinically validated. No listing on STRIDE BP and no published ESH or AAMI/ISO 81060-2 study |
| Connectivity | Wi-Fi 2.4 GHz, Mi Home app, Alexa and Google Home | None |
| Measurement range | Effective room size approximately 48 square metres | Pressure 0 to 299 mmHg; pulse 40 to 199 bpm |
| Power source | Mains, 230 V, 33 W maximum | Four AA cells or optional adapter |
| Regulatory status | BIS marked for electrical safety | CDSCO registered; CE marked -- neither of which is a validation study |
| Stated accuracy | Built-in laser PM2.5 sensor, plus or minus 10 percent or 10 micrograms per cubic metre | Manufacturer states plus or minus 3 mmHg, unverified by an independent protocol |
| Stored readings | Filter life tracking in the app | 120 readings across two users |
| Warranty | 1 Year Manufacturer Warranty | 1 Year Manufacturer Warranty |
| Annual energy use | 96 kWh a year at 8 hours a day on auto, about Rs768 at Rs8 per unit | not published |
| Annual running cost | Roughly Rs2,600 -- Rs1,999 filter plus about Rs600 of electricity at 8 hours a day | not published |
| CADR | 400 cubic metres per hour, particulate | not published |
| Cuff size | not published | 22 to 32 cm -- too small for many adult arms |
| Filter | True HEPA H13, integrated with activated carbon | not published |
| Filter replacement cost | About Rs1,999, roughly every 6 to 12 months depending on air quality | not published |
| Inflation | not published | Automatic, oscillometric |
| Irregular heartbeat detection | not published | Yes |
| Noise | 32.1 dB on sleep mode | not published |
Every row is a figure one or both products record. A blank is a figure the catalogue does not hold, not a zero.