Wearable Tech Glossary

Premium thermoplastic material used in high-end eyewear (Oliver Peoples, Persol). More refined and durable than standard plastic. Apple is using acetate for Apple Glasses frames, signaling a fashion-forward positioning above Meta Ray-Ban.

Google's branded domed AMOLED display on Pixel Watch 4. The dome shape curves the glass over the edges for an immersive wraparound look. Peaks at 3000 nits brightness, matching Samsung Galaxy Watch Ultra. Offers 10% more screen area and 16% smaller bezels than Pixel Watch 3. Expected to carry forward to Watch 5.

AirPods Pro mode that passes through ambient sound while using computational audio to reduce harsh sudden noises like power tools or traffic. Unlike standard Transparency mode, Adaptive Transparency processes 48,000 audio adjustments per second via the H2 chip. H3 is expected to improve reaction speed and accuracy.

Google's platform for extended reality running on Android. Samsung Galaxy Glasses run on Android XR, giving them native integration with Gemini, Google Maps, Google Translate, and the broader Android ecosystem.

Apple's on-device AI framework. Runs locally on-device for privacy, with encrypted cloud processing for complex tasks. The backbone of everything Apple Glasses will do — visual queries, Siri responses, real-time translation.

Apple's internal codename for Touch ID integrated into the Apple Watch side button. References appeared in leaked 2026 firmware before public developer betas. MacRumors reported in May 2026 that Apple deprioritized it for Ultra 4, choosing to allocate that hardware budget to battery capacity and sensor improvements instead.

Apple's internal hardware codename for AirPods Ultra, referenced in Bloomberg reporting. It is being developed alongside V73/V74 (20th anniversary iPhone) and the second-generation foldable iPhone as part of Apple's 2027 hardware wave, all currently tested on iOS 28.

Bureau of Indian Standards — India's mandatory electronics certification. Device makers typically file BIS certification 2-4 months before launch. A filing for a Google wearable device appeared in mid-2026, providing one of the earliest independent signals that Pixel Watch 5 was on track for an October 2026 launch.

Design Validation Testing. A late hardware development phase where near-final prototypes are tested internally for quality and functionality. Bloomberg confirmed AirPods Ultra entered DVT by May 2026, meaning the physical design is essentially locked in. Software development continues separately.

The world's largest eyewear company, parent of Ray-Ban and Oakley. Manufactures all Meta smart glasses under the licensing arrangement with Meta, including the new own-brand lineup where only Meta's logo appears.

Federal Communications Commission certification required for all wireless devices sold in the US. Apple typically files FCC documentation 2-3 months before launch. AirPods Pro 3 filed FCC approval in July 2025 before its September 2025 launch. No FCC filing for AirPods Pro 4 exists as of June 2026, which is the primary reason analysts favor a 2027 release over September 2026.

Over-the-counter medical device designation from the US Food and Drug Administration. Apple received FDA clearance for AirPods Pro 3 as an OTC hearing aid for mild to moderate hearing loss, requiring no prescription. The first consumer earbuds to receive this designation. The feature runs a one-time hearing test and adjusts audio output to compensate for the user's specific hearing profile.

Apple submitted an advanced real-time blood pressure alert feature for FDA regulatory review. FDA approval is required before Apple can market it as a clinical alert capability. The submission does not guarantee approval before Ultra 4's September 2026 launch. If review is still in progress at launch, the feature may ship via a later software update.

Samsung's AI health platform, rolling out to existing Galaxy Watch models from June 8 2026. Ultra 2 ships with these features built in: Energy Score, Vitals (5-signal overnight analysis), Heart Health Score, Daily Cardio Load, and Fitness Index.

Google's multimodal AI assistant, built directly into Galaxy Glasses via Android XR. Handles visual queries, real-time translation, search, and navigation. The Android counterpart to Meta AI and Apple Intelligence.

Apple's next-generation earbuds chip, successor to the H2 in AirPods Pro 3 (released 2022). Handles infrared camera input and audio processing simultaneously on-device. Bloomberg confirmed it is in active development. Enables Visual Intelligence without a phone connection.

Apple's next-generation audio processor, successor to the H2 in AirPods Pro 3. Confirmed in development by Mark Gurman at Bloomberg. Expected improvements: lower latency for Live Translation, stronger ANC via faster processing, more on-device Apple Intelligence, and possibly lossless audio support. The first confirmed AirPods Pro 4 detail.

Ultra 3's blood pressure feature. Tracks blood pressure trends over 30 days and flags sustained elevated readings. It is a wellness indicator, not a medical diagnostic. Ultra 4's FDA submission targets real-time alerting, which is a different capability: an active alert when blood pressure spikes in the moment, similar to how AFib detection works.

Light wavelengths invisible to the human eye. AirPods Ultra cameras use infrared — the same approach as Face ID — to sense the environment without capturing visible images. No photos, no stored footage. Environmental data is processed by the H3 chip, passed to Siri, then discarded.

Samsung's marketing category name for its smart glasses hardware, used at Samsung Unpacked events. Galaxy Glasses are the first product in the Intelligent Eyewear lineup, with a display-equipped Gen 2 (Haean) expected in 2027.

Image Signal Processor. The chip block that handles what the camera captures including noise reduction, color correction, and HDR. A better ISP means sharper photos and video in low light.

Liquid Crystal on Silicon — the microdisplay technology inside Specs. Projects through a diffractive waveguide to place digital objects in your field of view. Used in Spectacles 5 and continued in consumer Specs.

Meta's real-time AI mode on smart glasses — keeps the assistant active and listening continuously rather than requiring a tap. Current Ray-Ban Meta supports approximately 30 minutes of Live AI. Meta Glasses run the same Snapdragon AR1 Gen 1 chip as Ray-Ban Meta Gen 2; Live AI battery duration has not been officially specified for either.

A battery-conservation mode on Apple Watch Ultra that disables always-on display, heart rate monitoring, and background app refresh in exchange for extended runtime. Ultra 3 reaches 72 hours in Low Power Mode. Ultra 4 is rumored to target 72+ hours as its standard battery life, without relying on Low Power Mode to reach that number.

Low Temperature Polycrystalline Oxide — the display technology enabling variable refresh rates on Apple Watch. The screen can drop to near-zero Hz when the wrist is down and jump to 60Hz when raised. Combined with S12 chip efficiency, one of the two mechanisms behind the expected battery life improvement in Series 12.

US military durability standard covering extreme temperatures (-20°C to 55°C), salt fog, vibration, drops, and altitude. The current Galaxy Watch Ultra holds this certification; Ultra 2 is expected to retain or exceed it.

Meta's AI model from its Superintelligence Labs. Ships on all new Meta Glasses and rolled out via update to existing Ray-Ban Meta and Oakley Meta glasses starting May 2026.

Apple's internal hardware codenames for Apple Watch Series 12: N237 is the Wi-Fi model and N238 is the Cellular model. Both identifiers appeared in a leaked iOS 26 firmware build in December 2025, where they were listed under the Watch8 chip family with a new T8320 processor.

Apple's internal codename for the first Apple Glasses model. Display-free, camera-equipped, expected late 2027. Apple uses N-prefixed codenames for hardware projects during development.

Non-Terrestrial Network — a satellite connectivity standard built into Snapdragon Wear Elite. Allows the watch to send messages via satellite when cellular is unavailable. Whether Samsung enables this feature in software at Ultra 2 launch is unconfirmed.

Neural Processing Unit. A dedicated chip block optimized for running AI models locally. NPUs enable always-on voice detection, camera processing, and sensor fusion without draining the battery — essential for wearables that run all day.

Samsung's watch OS layer running on Wear OS, expected at Ultra 2 launch. Powers Galaxy AI health features including the updated Samsung Health app with Energy Score, Vitals, Heart Health Score, and Daily Cardio Load.

Lenses that automatically darken in sunlight and clear indoors by reacting to UV light. Samsung Galaxy Glasses offer photochromic lenses as an option, eliminating the need to swap frames between indoor and outdoor environments.

Optical sensor technology used in AirPods Pro 3's in-ear heart rate monitoring. A small LED shines light into the ear canal and measures blood flow changes. Same principle as Apple Watch's heart rate sensor, applied to an in-ear form factor. Enables AirPods Pro 3 to track heart rate across 50 workout types without a paired Apple Watch.

Apple's internal codename for an LLM-powered health coaching concierge for the iPhone Health app. Gurman reported it targeting spring 2026 as an iOS 26.x feature; it was delayed. Whether a version ships alongside Series 12 in September is unconfirmed. The feature runs on iPhone, not Apple Watch directly.

Apple's next-generation Watch processor, codenamed T8320 in the Watch8 family. Successor to the S10 (T8310) that powered Series 9, 10, and 11 — three consecutive generations of frozen silicon. Expected 3nm production. Stronger Neural Engine enables on-device Siri AI in watchOS 27 without iPhone dependency.

Emergency communication via satellite without cellular or Wi-Fi. Pixel Watch 4 LTE models were the first smartwatch to support satellite SOS standalone, without needing a paired phone nearby. Apple Watch and Galaxy Watch require the paired iPhone or Galaxy phone to initiate satellite emergency calls. Pixel Watch 4 works independently.

Snap's proprietary operating system for Specs. Released Sept 2025 with browser, gallery, Spotlight, and hand tracking. All 4 million developer Lenses run on it at launch.

Qualcomm's chip purpose-built for smart glasses. Handles AI inference, camera processing, and audio at low power. The same chip powers both the Meta Ray-Ban Gen 2 and Samsung Galaxy Glasses.

Qualcomm chip purpose-built for smart glasses. Handles AI inference, camera processing, and audio at low power. Powers the current Ray-Ban Meta glasses.

Qualcomm's 3nm wearable chip announced at MWC 2026. More power-efficient than the Exynos W1000 in current Galaxy watches; the primary reason Ultra 2's battery life improves despite only 35% more capacity.

The 12-megapixel image sensor inside each Galaxy Glasses camera. Samsung installs one per temple arm for a total of two cameras. The same sensor used in Meta Ray-Ban Gen 2, letting both products shoot comparable photo and video quality.

The consumer AR glasses launching fall 2026 at $2,195. Official name replacing the Spectacles brand.

The independent subsidiary Snap spun out in January 2026 to run its AR glasses hardware as a standalone long-term bet.

Snap's original brand for AR hardware. Retired at AWE 2025 when the consumer product was renamed Specs. Spectacles now refers only to developer kit devices.

The 2024 developer-only kit (226g, $99/mo lease, 45-min battery, 46° FOV). Not the consumer product — a separate device for developers to build Lenses.

Google's rumored custom chip for Pixel Watch 5, reported by Android Authority. Configuration: 1x Cortex-A78 + 2x Cortex-A55 cores, optimized for wearable workloads. If confirmed, it would be the first Google-designed processor in a Pixel Watch. Watch 4 uses Qualcomm's Snapdragon W5 Gen 2. NPT chip could enable deeper on-device Gemini processing and better battery efficiency.

A Wi-Fi frequency range (5.925 to 7.125 GHz) that enables faster, less congested wireless connections at short range. Presence in an FCC filing suggests Gen 3 may support faster data transfer or streaming.

Ultra-Wideband — a short-range radio technology for precise spatial tracking. Watch 9 adds directional Find My Phone, digital car key support, and proximity-based unlocking. Galaxy Watch 8 did not have UWB.

Apple's AI system that uses camera input to identify real-world objects and answer contextual questions. On iPhone it works via the Camera app. On AirPods Ultra, infrared sensors in the stems feed Siri real-time environmental data — recipe suggestions, walking directions, object identification — without capturing or storing images.

Samsung's health feature confirmed June 4, 2026. Analyzes five overnight bio-signals — heart rate, HRV, respiratory rate, skin temperature, blood oxygen — against your personal baseline, alerting when deviation suggests illness or recovery needs.

Apple's Watch OS launching alongside iPhone 18 in September 2026. Brings Siri AI to Apple Watch for the first time as a standalone app — no iPhone required for conversational AI. Also adds standalone Workout Buddy (previously required iPhone 15 Pro or newer), perimenopause and menopause Cycle Tracking support, and a dynamic app grid.

The transparent optical element in Specs that guides light from the LCoS display into the wearer's eyes. Uses billions of nanoscale diffraction gratings. Enables see-through AR without a mirror or prism.

Optical technology that projects AR content onto a transparent lens using light diffraction, creating floating overlays visible to the wearer. Used in Magic Leap and Microsoft HoloLens. Apple Glasses (N50) will NOT have a waveguide display. A future generation (N401) may.

Google's smartwatch operating system, at version 6 on Pixel Watch 4. Built on Android, developed with Samsung who contributed UI layer for Galaxy Watch. Pixel Watch runs stock Wear OS without Samsung's overlay. Only compatible with Android 11 or later, making Pixel Watch Android-exclusive with no iPhone support.