Halo Ring 4
Made for you, every metric that matters.
Halo Ring 4 vs Halo Ring 3
What's New in Halo 4?
Halo 4 is our thinnest and most comfortable smart ring yet. It's 40% lighter and slimmer than Halo 3, making it feel even more like everyday jewelry.
We've also upgraded the internal sensors and tracking technology to deliver improved accuracy for sleep, heart rate, stress, and overall wellness insights—while maintaining the same long-lasting comfort you expect from Halo.
Halo 3 remains part of our lineup and is still available for purchase in select styles, including our Flat Top and Concave designs. While Halo 4 introduces a lighter, slimmer profile with upgraded internal tracking technology, Halo 3 continues to offer the same core wellness tracking experience in the signature styles many of our customers already love.
Whether you prefer the latest Halo 4 or the distinctive look of Halo 3, you can choose the design that best fits your style.
Sizing Guide
Finding the right size is one of the most important parts of your Halo Ring experience.
Unlike traditional jewelry, Halo Ring contains advanced sensors that require a secure fit to provide accurate wellness tracking. Your ring should feel snug, but comfortable—tight enough that it won't rotate freely, but loose enough to remove without discomfort.
Should I Size Up?
In most cases, no.
Halo Ring is manufactured using standard US ring sizes, so if you already know your US ring size, we recommend ordering your normal size.
However, because Halo Ring is wider than a traditional ring (approximately 7–8.5mm depending on the model), it may feel slightly tighter than a thin jewelry band.
We recommend sizing up only if:
- You're between two ring sizes.
- You prefer a looser fit.
- Your fingers tend to swell throughout the day.
If your normal ring already fits snugly, stick with your usual US size.
Best Finger Placement
For the most accurate readings, we recommend wearing Halo Ring on your:
✅ Index Finger (Recommended)
You can also wear it on your:
- Middle Finger
- Ring Finger
- Thumb (if comfortable)
Avoid wearing Halo Ring on your pinky finger whenever possible, as sensor accuracy may be reduced.
Between Two Sizes?
✔️ Choose the smaller size if:
- You want the most accurate tracking.
- Your fingers rarely swell.
- You prefer a secure fit.
✔️ Choose the larger size if:
- Your fingers swell often.
- You plan to wear Halo Ring all day and overnight.
- You're between sizes.
What comes with HaloCare+ Lifetime Warranty
Standard 30-Day Warranty (Included)
Every HALO Ring comes with a 30-day warranty that covers manufacturing defects and hardware issues under normal use.
Lifetime Warranty (Optional Upgrade)
Our Lifetime Warranty provides extended peace of mind and covers your HALO Ring beyond the initial 30 days, including protection against defects and functional issues for as long as you own the ring. This option is recommended for long-term wear and daily use.
The HALO Lifetime Warranty provides extended protection beyond the standard 30-day warranty and includes:
- Coverage for manufacturing defects for the lifetime of the product
- Hardware malfunctions under normal, intended use
- Functional failures related to internal components
- Replacement support if the ring stops functioning due to covered issues
- Priority warranty assistance through our support team
Is there a subscription for HALO Ring?
No — HALO Ring does not require a subscription.
All features are included with your purchase, and the HALO app is completely free to use. You’ll have full access to health insights, tracking, and updates with no monthly fees or hidden costs.
You pay once for just the ring and enjoy lifetime access.
Shipping Information
Processing time: 1 to 2 working days
Shipping time: 3 to 5 working days.
We offer a stress-free 30-day return policy to ensure your satisfaction. If you’re not completely happy with your purchase, you can return it within 30 days.
Halo App Information
Want to learn more about how our app works? We’ve created a full guide that walks you through all the features, setup steps, and tips to get the most out of your experience.
From syncing your device to customizing your settings, you’ll find everything you need in one place.
Question?
Whether you need to submit a warranty claim or have a question about your order, our team is here to help.
Warranty Claims
If your Halo Ring arrives defective or experiences a covered issue within 30 days of delivery, you may be eligible for a replacement.
https://www.haloring.shop/pages/contact
Order Support
Need help with your order, shipping, sizing, tracking, or the Halo app? Our recently expanded customer support team is available to assist you with any questions and provide faster response times.
https://www.haloring.shop/pages/contact
WHAT'S INSIDE
Quietly powerful
Thinner. Lighter. Smarter. Halo Ring 4 is our most advanced smart ring yet—up to 5 days of battery life, upgraded wellness tracking, and no monthly subscription.
The app is free. Forever.
Sleep stages, heart rate, HRV, stress, cycle, steps, workouts, calories. One ring, the full picture.
Every metric
Sleep stages, heart rate, HRV, stress, cycle, steps, workouts, calories. One ring, the full picture.
4-5 day battery
Up to 5 days between charges. Life doesn't pause—neither does Halo.
Waterproof to 100 m
Shower, swim, sauna. Halo comes with you.
Aerospace titanium
Hypoallergenic, scratch-resistant, weightless. Wear it forever.
EVERY MORNING
6 metrics with your coffee
While you slept, Halo watched. You wake to a two-line briefing: how you slept, how ready you are, and what to do about it.
TECHNOLOGY
The Nano Chip
At the heart of Halo sits a chip smaller than a grain of rice. It samples your body hundreds of times a minute, then goes back to sleep, sipping power so the ring lasts a full week.
WHAT'S INCLUDED
What's in the box
Everything you need on day one — no upsells at checkout, no surprise "accessories."
THE HONEST MATH
Same metrics. None of the markup.
You're not paying for the name or the marketing budget — and you're never charged monthly to see your own data.
Comparison based on publicly listed prices and features of leading smart rings as of 2026.
REVIEWS
“It taught me when to rest, which turned out to be the thing I was worst at.”
I stopped guessing why I was tired. The morning briefing is two lines and it is always right.
Seven days of battery means I actually never take it off. My watch never managed that.
STRAIGHT FROM REDDIT
Unfiltered reviews from r/HaloRing
Real customers, real threads. Every card links back to the actual Reddit post.
Love Halo
Two weeks in and I have not taken it off — the morning sleep score matches how I actually feel.
Halo Ring Review
Full month with the Halo Ring 4: sleep tracking, battery, and the app — a proper breakdown.
Ring works, accurate, and pretty
Ring works, accurate, and pretty. Verdict after three weeks of testing.
Thank you Halo
Long-form review from a night-shift nurse — this ring changed how I understand my recovery.
Great for its price
Compared head-to-head with the leading brand. The Halo held its own on every metric that mattered.
Great ring
Two-word review — the photos say the rest.
Halo Ring for the win
First-week thoughts from a fitness coach. The HRV data is what I look at every morning now.
Love Halo
Two weeks in and I have not taken it off — the morning sleep score matches how I actually feel.
Halo Ring Review
Full review with metric-by-metric breakdown. Sleep score is spookily accurate.
Loving my Halo Ring
Unboxing + first-morning readings. Feels premium, reads accurate.
Try it for 30 nights. Risk free.
Wear it. Sleep in it. Swim with it. If Halo doesn't change how you understand your body, send it back for a full refund.
QUESTIONS
Everything you're wondering
Can I wear the Halo Ring all day?
Yes — it’s designed for 24/7 comfort.
It’s lightweight, slim, and smooth enough to wear while sleeping, lifting, running, or working.
How does the Halo Ring track my health?
The Halo Ring uses built-in sensors to measure heart rate, sleep quality, recovery levels, calories burned, and daily activity. All data syncs automatically to the Halo app for real-time insights and personalized recommendations.
How long does the battery last?
Halo lasts a full 4-5 days on a single charge.
Is it waterproof?
Yes. Rated to 100 metres.
Do I need a subscription?
Never. The Halo app is free forever.
What if it doesn't fit?
If your Halo Ring doesn't fit as expected, simply reach out to our support team. We'll be happy to assist you with a size swap and help you find the perfect fit.