Zacurate Pro Series 500DL Fingertip Pulse Oximeter vs Gaiam Zafu Organic Cotton Meditation Cushion Pillow

These two differ on 6 recorded specifications. The Gaiam Zafu Organic Cotton Meditation Cushion Pillow is ₹1,500 dearer.

Zacurate

Zacurate Pro Series 500DL Fingertip Pulse Oximeter

₹1,999

Competent hardware carrying two caveats worth knowing.

Gaiam

₹3,499

The adjustable fill is the feature, not the fabric.

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.

Buy it if: Anyone sitting to meditate who needs the seat height matched to their own flexibility.

Avoid it if: Anyone wanting a light, packable cushion -- buckwheat fill makes this heavy.

6 of 18 rows differ. Differences first.

Specification	Zacurate Pro Series 500DL Fingertip Pulse Oximeter	Gaiam Zafu Organic Cotton Meditation Cushion Pillow
Price	₹1,999	₹3,499
Clinical validation	Manufacturer states testing against ISO 80601-2-61; no independent study published	Not applicable
Measurement range	SpO2 70 to 100 percent; pulse rate 30 to 250 bpm	Seat height approximately 15 cm, adjustable by removing fill
Power source	Two AAA cells, approximately 30 hours	Not applicable
Regulatory status	US FDA cleared. Not CDSCO registered for the Indian market	Not a notified medical device
Stated accuracy	Plus or minus 2 percent Arms for SpO2 between 70 and 100 percent, manufacturer stated	Not applicable
Stored readings	Last reading only	Not applicable
Connectivity	None	None
Warranty	1 Year Official Brand Warranty	1 Year Official Brand Warranty
Auto-off	8 seconds without a finger	not published
Cover	not published	Organic cotton, removable and machine washable
Diameter	not published	36 cm
Display	Dual-colour LED, six orientations	not published
Fill	not published	Buckwheat hulls, removable through a zip to set the height
Finger size	Fits 0.3 to 1 inch thickness	not published
Known limitation	Nail polish, cold fingers and dark skin tone all reduce accuracy	not published
Perfusion index	Not displayed -- so an unreliable reading looks like a good one	not published
Seat height	not published	About 15 cm as supplied
Why height matters	not published	The hips must sit above the knees for the pelvis to tilt forward; too low and the lower back rounds

Every row is a figure one or both products record. A blank is a figure the catalogue does not hold, not a zero.