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This model on sale delivers crisp image quality with its 1080p sensor and features two-way communication, along with night vision. You get motion detection, along with real-time alerts that come straight to any connected device. Now this model isn't wireless, so you will need to install it. For most people, that's just going to require you to remove your current doorbell and plug in this new device using the existing wiring. Sometimes there are some additional steps, but for most people it should be that straightforward. Again, this is a refurbished model from Woot, but it does come with a 90-

Made from titanium, the Ultrahuman Ring Pro comes in sizes five to 14, and four different finishes: Bionic Gold, Space Silver, Aster Black, and Raw Titanium. The major new hardware feature is its dual-core processor which improves on-device data processing, and a larger memory capacity where up to 250 days of data can be stored. A new battery returns up to 15 days of battery life, depending on your use, and there’s a choice of charging cases too. The smart ring tracks sleep, activity, recovery, stress, and sleep patterns as standard. It doesn’t require a subscription, but there is a choice of

The RingConn Gen 3 tracks activity, sleep, stress, blood oxygen levels, heart rate, sleep apnea, and women’s health, just as you’d expect. New for the Gen 3 is Vascular Health monitoring. After calibrating the smart ring with blood pressure results from a cuff, it uses vascular load indicators to show long-term trends — Stable, Slight, Noticeable — to help better understand your heart health. It’s important to note the RingConn Gen 3 does not measure blood pressure, and there’s almost no mention of blood pressure in the company’s literature around the smart ring. Instead, the Vascular Health f

Like the RingConn Gen 2, the RingConn Gen 3 is made of titanium and epoxy resin, and is both waterproof to 100 meters and has an IP68 dust and water resistance rating. The smart ring is 2.3mm thick, which is 0.3mm thicker than the RingConn Gen 2 and RingConn Gen 2 Air, and slightly heavier at between 2.5 and 3.5 grams, depending on the size of smart ring you wear. RingConn has not confirmed the width of the Gen 3. For comparison, the Oura Ring 4 is 2.88mm thick and weighs between 3.3 and 5.2 grams, depending on the size. The RingConn Gen 3 comes with a charging case suitable for travel in the