Alaska Bear Natural Silk Sleep Mask Contour vs Zacurate Pro Series 500DL Fingertip Pulse Oximeter
What separates them
These two differ on 6 recorded specifications. The Zacurate Pro Series 500DL Fingertip Pulse Oximeter is ₹700 dearer.
Alaska Bear Natural Silk Sleep Mask Contour vs Zacurate Pro Series 500DL Fingertip Pulse Oximeter
Alaska Bear
Alaska Bear Natural Silk Sleep Mask Contour
₹1,299
Momme is the specification that separates real silk from the padded polyester sold as it -- 19 momme is a genuine weight, and it is why this does not slide off or crease the face overnight.
Full details →
Zacurate
Zacurate Pro Series 500DL Fingertip Pulse Oximeter
₹1,999
Competent hardware carrying two caveats worth knowing.
Full details →Who the Alaska Bear Natural Silk Sleep Mask Contour is for
Buy it if: Light sleepers, shift workers, and anyone who finds a flat mask presses on the eyes.
Avoid it if: Anyone who needs total blackout -- a small gap at the nose bridge is normal on any contoured mask.
Who the Zacurate Pro Series 500DL Fingertip Pulse Oximeter is for
Buy it if: Anyone who wants an FDA-cleared oximeter and does not need Indian regulatory approval.
Avoid it if: Anyone wanting a CDSCO-registered device, or a perfusion index to judge reading quality.
Specifications, side by side
6 of 18 rows differ. Differences first.
| Specification | Alaska Bear Natural Silk Sleep Mask Contour | Zacurate Pro Series 500DL Fingertip Pulse Oximeter |
|---|---|---|
| Price | ₹1,299 | ₹1,999 |
| Clinical validation | Not applicable | Manufacturer states testing against ISO 80601-2-61; no independent study published |
| Measurement range | Adjustable strap, 50 to 70 cm head circumference | SpO2 70 to 100 percent; pulse rate 30 to 250 bpm |
| Power source | Not applicable | Two AAA cells, approximately 30 hours |
| Regulatory status | Not a notified medical device | US FDA cleared. Not CDSCO registered for the Indian market |
| Stated accuracy | Not applicable | Plus or minus 2 percent Arms for SpO2 between 70 and 100 percent, manufacturer stated |
| Stored readings | Not applicable | Last reading only |
| Connectivity | None | None |
| Warranty | 1 Year Official Brand Warranty | 1 Year Official Brand Warranty |
| Auto-off | not published | 8 seconds without a finger |
| Care | Hand wash, air dry | not published |
| Display | not published | Dual-colour LED, six orientations |
| Finger size | not published | Fits 0.3 to 1 inch thickness |
| Known limitation | not published | Nail polish, cold fingers and dark skin tone all reduce accuracy |
| Light blocking | Near total at the eye, small gaps possible at the nose bridge | not published |
| Material | 19 momme mulberry silk, both faces | not published |
| Perfusion index | not published | Not displayed -- so an unreliable reading looks like a good one |
| Profile | Contoured, with eye cavities that allow blinking | not published |
| Strap | Adjustable, with a flat rear buckle so it does not press when lying on your back | 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.
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