Halo Ring 4 Smart Ring
Best price now
$50.00at eBayChecked Nov 9
Compared across 2 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission.
Compared across 2 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission.
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The Halo Ring 4 is a titanium smart ring that tracks sleep, heart rate, HRV, SpO2, stress, cycle and activity without a screen or a watch on your wrist. It is the thinnest ring in its line, about 40% lighter and slimmer than the Halo Ring 3, and the companion app carries no subscription. Buyers say sleep scoring and HRV readings hold up against the leading brand, and that it is comfortable enough to wear around the clock. It suits people who want recovery and sleep data in a low-profile form; anyone who wants on-wrist notifications or a display should look at a smartwatch instead.
In stock
Availability unknownSold by jenniffer005 (100% positive, 397 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
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Lowest price we've seen: $59.00 on Nov 5 at Halo Ring. Tracked across 1 store since Nov 5.
Owners describe accurate tracking, especially sleep scores and HRV, and say the ring feels premium and looks good. Several report it held its own against the leading brand on key metrics and helped them understand their recovery.
Halo Ring 4 is a smart ring that tracks sleep, heart rate, HRV, SpO2, stress, cycle and activity. It is meant to give wellness insights without a bulky smartwatch. It is 40% lighter and slimmer than Halo Ring 3.
The outer shell is titanium and the inner band holds the optical sensors. It is waterproof to 100 m, so it can be worn in the shower, while swimming and in the sauna. Battery life is up to 5 days on one charge.
The Halo app is free, with no subscription. The ring is wider than a traditional ring, about 7 to 8.5 mm depending on the model, so it may feel slightly tighter than a thin jewelry band.