Welp, Smart Earrings Are a Thing Now

There is no shortage of ways to track your health nowadays. You’ve got rings, earbuds, phones, wristbands, watches, and this thing that scans your pee, just to name a few. Crowded though the field may be, there’s always room for one more wearable. Just a small health-optimizing gadget as a treat—no, seriously, like, really small.

The Lumia 2, a $250 smart earring that’s officially launching today, claims to be the world’s smallest wearable. With a weight of just 1g, Lumia might actually be correct in planting that very tiny flag. It makes the 3g to 5g Oura Ring look big, and the 30g to 40g Apple Watch Series 11 look absolutely massive.

Don’t be deceived, though; the size of the Lumia 2 betrays a pretty large feature set. According to Lumia, its smart earring can do a lot of what popular wearables like Oura and its expensive smart ring can do, including sleep tracking, cycle tracking, blood flow tracking, and even providing a daily readiness score. In fact, Lumia says its smart earring might even manage to expand on some of the capabilities of smart rings and smartwatches due to its unique positioning on your body, which is to say, pressed right against your head.

The Lumia 2, according to the company, can “continuously track real-time blood flow to your head, giving anyone instant insight into how blood flow affects energy, focus, and mental clarity.” In other words, Lumia is particularly well positioned to track what’s called cerebral blood flow, a more clinical way of describing how blood flows to that big mind meatball you call a brain. There’s already evidence that it legitimately does that. In a study via the Journal of the American College of Cardiology (JACC), Lumia’s effectiveness was already measured using a Doppler ultrasound, and its smart earring is apparently the real deal. That being said, neither the Lumia 1 nor the 2 is FDA cleared yet, so take that into consideration.

You may have noticed that there’s a “2” next to this smart earring’s name. That’s because there actually is a first-gen model, but the original Lumia was geared entirely towards medical patients, particularly those with chronic blood flow disorders like postural orthostatic tachycardia syndrome (POTS) or people with long Covid who experience “brain fog.” With the Lumia 2, the company is bringing its smart earring to the masses, meaning you don’t have to have some kind of ailment to buy one and be among the first pioneers of smart earring technology.

To match that broader launch, the Lumia 2 comes in several styles, including “huggie hoops,” cuffs, and studs, and a few different finishes, including gold, silver, and clear. It also attaches to any push-back earring, according to Lumia, and the cuff version doesn’t even require your ear to be pierced. The Lumia 2 itself is made with non-allergenic materials like platinum and titanium, and there’s even a swappable battery pack, so you don’t have to remove it to charge. Speaking of charging, Lumia says you’ll get between 5 and 8 days of battery life per pack, and the smart earrings (they’re sold in pairs, but the health-tracking module is worn only on the left) can be worn while showering. They’re supported via a companion app on iOS and Android.

My biggest question here isn’t whether Lumia 2 works. I think it probably does based on the available evidence. How the smart earring feels pressed against your head all day and even when you sleep, however, can only be determined by wearing one, and that’s not something I have insight into yet. Comfort questions aside, on paper, the Lumia 2 makes smart earrings feel a lot less laughable than they could otherwise be, but maybe that’s just my undiagnosed brain fog speaking.

If you’re ready to dive headfirst into the smart earring world, Lumia says the Lumia 2 will be available in 2026, but there’s no specific release date yet. Lumia will start by selling its smart earring in the U.S. and Canada, though it says “more countries” will follow. You’ll also have to pay a $9.99 subscription fee once you buy the smart earring for access to all of your health metrics, which is a bummer, but unfortunately, not unheard of in the health wearable world.