FKGZJF Smart Ring with Health and Fitness Tracking

For the active professional who wants health insights without the bulk of a watch, this smart ring fits seamlessly into your day. It tracks workouts like morning runs or yoga sessions, monitors sleep without disrupting rest, and offers 24/7 heart rate, blood oxygen, and HRV monitoring. With a battery lasting up to 5 days and a portable charging case for extended use, it's a discreet tool for health and convenience. Compatible with iPhone and Android. No subscription fees required.

  • 3 variants
  • No subscription fee
  • Size: 3 variants
New prices $52 – $99
Used prices $52
Price spread ~91% Across new variants
Customer rating 4.2 20 ratings

Available variants (3)

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Variant comparison

Compare prices, availability, and key variant differences in one table.

Feature Gold, Size 8 Gold, Size 6# (US size 6.5 approx) Silver, Size outer circumference
Price $99.00 $59.98 $51.90
Updated Apr 23, 2026 May 20, 2026 Jun 3, 2026
Availability Available to order Available to order Available to order
Battery Life 3–5 d 3-5 days (ring), 60 days (with charging case) 3-5 days, 60 days with charging case
Charging Time 2 2 hours (ring) 2 hours
Size 8 6# (US size 6.5 approx)
Sport Modes Running, Cycling, Skipping rope, Walking, Hiking, Yoga, Dancing, Golf running, cycling, skipping rope, walking, hiking, yoga, dancing, golf

Amazon live offers

Offers updated

1 live offer
Top live offer $51.90
Used from $51.90
Offer count 1+
Seller Condition Price Shipping Updated
Third-party seller FBA Used - Like New $51.90 Free shipping 6/3/26 View offer

Overview

Compare FKGZJF Smart Ring with Health and Fitness Tracking variants, pricing tiers and key differences.

Learn more

How variants differ

  • Battery Life
  • Charging Time
  • Size

Who each variant is for

  • Start with your budget: the visible price spread across variants is about 91%.

Reviews

4.2 / 5 from 20 ratings
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Product confidence

Reviews

4.2
(20 ratings)

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