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QALO QRNT Slim Smart Ring
Device Profile Specs

QALO QRNT Slim Smart Ring

Compiled by Gil Sapir, Editor•Manufacturer Specifications

Slim design with advanced health tracking features

MSRP: $299

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.

✓ 100% Subscription-Free ($0/mo)$$ Moderate Tier
Available Finishes:Brushed Gold
📏 Sizes 6-14 Available
Unsure of your ring size?Order Official Sizing Kit First on Amazon
AmazonCheck Price on Amazon

⚡ No monthly subscription fee listed

⚡

⚡ Specification Summary: QALO QRNT Slim Smart Ring

Top RecommendationQALO QRNT Slim Smart Ring

QALO QRNT Slim Smart Ring offers a subscription-free hardware setup with $0 ongoing monthly software fees. Published specifications list up to 7-day battery life, Silicone, and 3g weight.

📋 Key Takeaways:

  • ✓Rated Battery Life: Up to 7 days per charge cycle (90-minute full recharge).
  • ✓Monthly Subscription: $0/month ($299.00 3-year total).
  • ✓Durability & Sizing: Not specified water resistance with US 6-14 sizing options.
🎯 Key Highlight

Slim design with advanced health tracking features

🎯 Sizing Guidance

Order the manufacturer sizing kit prior to ring delivery to verify finger fit.

Advantages & Pros

  • ✓Accurate tracking with improved sensor technology
  • ✓Zero subscription costs
  • ✓Interchangeable covers
  • ✓Enhanced data privacy
  • ✓Includes charging case

Limitations & Cons

  • ✕May fit snug due to raised sensors
  • ✕Some users report tracking inaccuracies

Form Factor & Resilience

MaterialsSilicone
Width / Thickness6mm wide / 2.5mm thick
Weight3g
Water ResistanceNot specified
Size RangeUS 6-14
Sizing Kit Offered✓ Yes

Power Architecture

Battery LifeUp to 7 days
Charging Time90 minutes
Charger TypeCharging case
Charging Case Included✓ Yes
Case Battery Capacity+3 days

Sensor Array & Biometrics

Built-in SensorsHeart Rate, Heart Rate Variability (HRV), Oxygen Saturation (SpO2), Skin Temperature, Movement
LED Optical ColorsRed, Green, Infrared
Stress Tracking✓ Yes
Cycle Prediction✓ Yes
Sleep MetricsSleep Stages, Movement, Sleep Score

Software & Ecosystem

Companion AppQALO
Supported OSiOS & Android
Apple Health Link✓ Yes
Google Connect Link✕ No
Offline StorageUp to 7 days
Bluetooth versionBluetooth 5.0
📏 Sizing Friction Eliminator

Virtual Sizing Assistant

Convert your finger circumference to a standard US ring size. Smart ring brands may size differently from jewelers, so confirm with the manufacturer's sizing guide or sizing kit before buying.

⚠️
Swelling FactorWe recommend sizing up if your knuckles are wider than your finger base, or if you plan to wear the ring overnight (when fingers naturally swell).

Your Standard US Ring Size

US
Nearest Standard US SizeJeweler sizing, not brand-specific
8

Smart ring sizes vary by brand and model. Use this as a starting point and confirm your size with the manufacturer's sizing guide or sizing kit before ordering.

Interactive Sizing Tool

Sizing Decision Matrix (24-Hour Sizing Kit Rule)

Learn how to bypass sizing mismatches. Under the 24-Hour Sizing Kit Rule, users must wear a plastic sizing ring for a full day to capture natural biometric swelling cycles.

Video thumbnail: Official Smart Ring Sizing & Measurement Guide
Step 1 of 3

Do you own or have access to an official vendor sizing kit?

Interactive Calculator

True Cost of Ownership (TCO) Calculator

See how ongoing monthly subscription fees add up over time compared to zero-fee smart rings.

3 Years
1 Year (12 Mo)2 Years (24 Mo)3 Years (36 Mo)
Oura Ring Gen 3$514.64
$299 MSRP + $215.64 sub
Ultrahuman Ring AIR$349.00
$349 MSRP + $0 sub
Shop Oura Ring Gen 3Check Price on Amazon
Shop Ultrahuman Ring AIRCheck Price on Amazon

Cumulative Cost Projection Graph

⚠️ Critical Buyer Warning

The 2026 Smart Ring Blacklist

Common pitfalls in generic budget smart ring listings based on published specifications and public buyer reports.

01

Ring #1 to Avoid: Kuxlagz Smart Ring 2

Reason: Tiny Battery Capacity

Listed with a tiny ~20mAh battery cell, buyers frequently report short runtime between charges that makes multi-day overnight sleep tracking impractical.

02

Ring #2 to Avoid: Ti-Vision Smart Fitness Ring

Reason: Basic Sensor Hardware

Generic optical sensor module without published multi-wavelength motion compensation specs or major health-platform integrations.

03

Ring #3 to Avoid: Weyrinice Smart Ring Health Tracker

Reason: App Subscription Paywall

Places historical biometric dashboards behind a recurring companion app fee that is easy to miss on retail listings.

See the remaining 2 budget ring warnings before you buy.

Enter your email to instantly reveal the final 2 blacklisted rings.

Frequently Asked Questions: QALO QRNT Slim Smart Ring

Does the QALO QRNT Slim Smart Ring require a monthly subscription?

No. The QALO QRNT Slim Smart Ring is subscription-free ($0/month), so its 3-year total cost remains equal to its $299 hardware MSRP.

How long does the QALO QRNT Slim Smart Ring battery last?

Manufacturer specifications rate the QALO QRNT Slim Smart Ring for up to 7 days per charge, with a full recharge time of approximately 90 minutes.

What are the QALO QRNT Slim Smart Ring dimensions and water resistance?

The QALO QRNT Slim Smart Ring weighs 3g, measures 6mm wide by 2.5mm thick, is constructed from Silicone, and is rated for Not specified.

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