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Amazon is selling Ring's newly released Battery Doorbell 2K (2nd Gen) for $39.99, down 60% from its $99.99 list price. The device records 2K video with up to 6x Enhanced Zoom and a 140°x140° field of view, and includes Live View, Two-Way Talk, motion alerts, and a rechargeable battery for wireless installation. It's available in Speckled Gray, Speckled White, and Matte Mocha finishes.
Amazon is currently selling the Ring Indoor Cam Plus for $29.99, down from its $59.99 list price, a 50% cut that matches the biggest discount seen on the device this year. The camera offers 2K video, customizable motion zones, two-way talk with noise cancelation, and a built-in remote-activated siren, and carries a 4.6-star rating.
Bloomberg reports Apple is building early prototypes of a screenless wearable with a thin fabric band and sensor-equipped module, aimed at competing with Whoop and Oura Ring. The project remains in an early technology-investigation stage and isn't expected to launch before 2028, if it ships at all. Executives including Eddy Cue and Tim Cook reportedly back the effort, with Cue pushing Apple's health team to borrow ideas from simpler, fitness-focused competitors since taking over health leadership last October.
Amazon is currently selling the Oura Ring 4 for $319.99, down 20% from its $399 list price, matching the lowest price seen since Prime Day. The smart ring tracks sleep, recovery, readiness, heart rate, temperature and stress, and offers roughly 5 to 8 days of battery life depending on size and settings.
Oura's upcoming IPO will offer 50 million shares priced between $40 and $44, but nearly two-thirds of those shares are being sold by existing shareholders rather than the company itself. Forerunner Ventures, an early backer since 2020, stands to collect roughly $1.2 billion by selling its entire stake, accounting for about 80% of shares sold by insiders. Oura itself expects to net around $532.6 million, most of which will go toward covering tax obligations tied to vesting employee shares.
Vocci has released a titanium-coated ring, weighing under 6 grams, that lets users record meetings and conversations by double-tapping a button, with a hold-to-ask feature for querying its AI assistant through a companion app. The ring offers roughly 8 hours of recording per charge, a charging case that adds three more charges, and produces automated transcripts, highlights, and AI-generated summaries of conversations.
Amazon is currently selling a two-pack of Ring's Indoor Cam 2K for $59.98, a 50% discount that saves buyers $60 off the regular price. Each camera includes two-way talk, night vision, and USB-C power, letting shoppers add indoor monitoring to two rooms at once.
An analysis traces the evolution of memory allocation from stack-based schemes to dynamic linked-list heaps, garbage collection, and jemalloc's 2006 introduction of 'arenas' for NUMA and multi-core memory management. It notes that standard malloc() implementations serialize concurrent allocation requests, causing multithreaded applications to slow down rather than scale as processor counts increase.
A longtime Oura Ring wearer has stopped using smart rings after about a year, citing fit issues caused by weight loss and temperature swings, the need to remove the ring for weightlifting, and damage from frequent hand washing. The user says two devices broke over the period, partly due to inconsistent removal for water exposure and physical activity.
Amazon is selling the Ring Floodlight Cam Wired Pro for $149.99, half its $299.99 list price, matching the lowest price the outdoor security camera has hit. The device includes 3D motion detection, color night vision, and an integrated siren for deterring intruders.
Apple unveiled the Watch Ultra 4, its top-tier smartwatch, featuring an S11 chip, upgraded heart-rate sensors, and battery life reaching 84 hours in low-power mode or 50 hours in normal use. The device introduces a daily readiness score, a VO2 Max test, and an AI-powered insights tab in the redesigned Health app, plus audio intelligence features for environmental sound alerts and conversation tracking.
Circular has released two new smart rings, the Ring 3 Pro and Ring 3 Slim, combining health tracking features with NFC-based contactless payment support and haptic feedback. The move puts Circular ahead of rival Oura in offering payment functionality directly on a smart ring.