Mentra Live Smart Glasses

Open-source smart glasses platform with integrated camera, microphones, speakers, and AI processing. Runs MentraOS with full SDK support for custom app development and deployment. Designed for enterprise field work, hands-free video calls, real-time diagnostics, and AI-assisted workflows across aviation, healthcare, agriculture, and industrial sectors.

complexity: hardtolerance: general
Mentra Live Smart Glasses

Snapshot

Feasibility at a glance

PT localization

3/10

Low

Only finishing and testing can be localised in Portugal.

Per unit

$300–400

at 500-unit volume

Starter batch

500units

minimum viable run

To first batch

28weeks

8 phases, design to ship

Budget

€195–240k

all-in estimate

Bottom line

No Portuguese manufacturer in the registry has the integrated capability to produce smart glasses—optical frame molding, flex-rigid PCB assembly, MTK chipset programming, camera/sensor integration, and wearable audio require a specialized optoelectronics partner. Zeiss (PT) is listed but focuses on medical/ophthalmic devices, not consumer wearables. For a 500-unit pilot of an open-source AI glasses platform, the priority is finding an EU partner with proven experience in miniaturized wearables (sub-50g), camera module assembly, and CE-RED certification, then transferring knowledge to a Portuguese assembly partner for scale production once the design stabilizes.
Read full insight

Smart glasses are highly complex wearable electronics requiring specialized optics, miniaturized PCB assembly, low-power chipset integration, and extensive firmware/testing—capabilities absent in Portugal's manufacturing base. Co-development with an established EU wearables/optics partner (e.g. Zeiss Vision Care in Germany or a Scandinavian electronics contract manufacturer) provides access to optical expertise, flex-PCB assembly lines, and regulatory know-how for CE/RED/RoHS compliance while keeping IP and supply chain within the EU. The 500-unit pilot volume is too small to justify fully local tooling but too strategic (open-source platform with SDK) to risk in China. EU co-development balances time-to-market, quality control, and long-term platform sovereignty.

What it does

4 capabilities

Captures hands-free HD video and audio of real-world tasks so workers can document inspections, repairs, or field visits without holding a phone.

Runs custom AI apps that provide live captions, translations, diagnostics, and step-by-step guidance directly in the wearer's view.

Connects to video call platforms like Teams and Google Meet so remote experts can see what the wearer sees and provide real-time help.

Accepts voice commands and touch gestures to control apps, navigate menus, and trigger recordings without interrupting physical work.

How it's made

5 stations · build route

  1. 1

    Injection mold frame and temples

    Polycarbonate front and arms molded, then CNC-finished for button and hinge precision.

  2. 2

    Fabricate and populate main PCB

    Multi-layer flex-rigid PCB fabricated, then SMT assembly of MTK8766, power management, and Bluetooth ICs.

  3. 3

    Integrate camera and sensor modules

    Camera, microphone array, and swipe sensor aligned and bonded into frame cavities with adhesive.

  4. 4

    Assemble battery and audio components

    260mAh cell installed in temple, stereo speakers mounted, and USB-C port soldered to PCB.

  5. 5

    Flash MentraOS and final test

    Firmware loaded, Bluetooth pairing verified, camera/audio checked, then packaged with case and cable.

Risks to watch

5 identified · 4 blocking

1 critical
3 high
1 medium

Critical

Intellectual Property and Firmware Leakage

MentraOS is the core differentiator—an open-source platform with SDK for custom AI apps. If the firmware, chipset integration code, or hardware schematics leak during manufacturing, competitors (especially low-cost Chinese ODMs) can clone the platform and undercut pricing within 6–9 months. Smart glasses require close collaboration between hardware manufacturer and software team, meaning the ODM will have access to PCB layouts, BOM, firmware binaries, and potentially SDK source code. At pilot scale (500 units), manufacturers may not enforce strict IP controls or NDAs as rigorously as for high-volume contracts.

Mitigation — Implement a tiered IP protection strategy: (1) Sign comprehensive NDAs and IP ownership clauses with the EU co-development partner, specifying that all schematics, PCB designs, and tooling remain GETMILK property. (2) Use encrypted firmware images and secure boot on the MTK8766 to prevent reverse engineering—only GETMILK can sign firmware updates. (3) Separate hardware manufacturing (PCB, frame, assembly) from firmware flashing—flash MentraOS in-house or at a trusted Portuguese facility (e.g. Siemens Healthineers PT) after final assembly. (4) Conduct regular audits of the manufacturer's facility and component sourcing to ensure no unauthorized copies or leaks. (5) Register design patents and trademarks in the EU for the frame design, swipe sensor UI, and MentraOS branding.

High

Component Supply Chain Fragility

Smart glasses depend on a complex global supply chain for specialized components: MTK8766 chipsets (Taiwan), 119° camera modules (Japan/China), 260mAh lithium-ion cells (South Korea/China), and miniaturized stereo speakers (China). The EU has limited domestic production of these components, creating dependencies on Asian suppliers. Lead times for camera modules and custom batteries are 12–16 weeks, and any disruption (chip shortage, shipping delays, geopolitical tension) can halt production. At 500-unit pilot volume, GETMILK has minimal negotiating power and will be deprioritized by component vendors during shortages.

Mitigation — Establish dual-source agreements for critical components: identify both Asian and EU distributors (e.g. Avnet, Würth Elektronik) who can supply MTK chipsets and camera modules with buffer stock. Pre-purchase long-lead components (MTK8766, camera modules, batteries) for 1,000 units before committing to final assembly. Build 8–12 weeks of safety stock for pilot production. Work with the EU co-development partner to qualify alternative camera modules (e.g. Sony IMX sensors via EU distribution) and battery suppliers (e.g. Varta Microbattery in Germany) to reduce single-source risk.

High

CE, RED, and RoHS Certification Delays

Smart glasses with integrated radio (Bluetooth 5.3), camera, and lithium-ion battery must comply with multiple EU directives: CE marking (general product safety), RED (Radio Equipment Directive 2014/53/EU), RoHS (hazardous substances), REACH (chemical registration), and potentially GDPR considerations for camera/audio recording. Certification requires testing at accredited EU labs for RF emissions, SAR (specific absorption rate), electrical safety, and battery safety (UN38.3). First-time certification for a new wearable electronics platform typically takes 12–16 weeks and costs €25,000–40,000. If the PCB layout, antenna design, or battery enclosure fails initial testing, redesigns add 8–12 weeks and require re-testing.

Mitigation — Engage an EU notified body (e.g. TÜV Rheinland, Intertek, or SGS) during the design phase to conduct pre-compliance testing of the MTK8766 PCB, Bluetooth antenna, and battery enclosure. The EU co-development partner (Zeiss, NOTE, or PARTNEREL) should have existing relationships with notified bodies and can accelerate the process. Budget €35,000 and 14 weeks for full CE/RED/RoHS certification. Use pre-certified Bluetooth modules (e.g. Nordic nRF52 or MTK modules with FCC/CE certification) to simplify RF testing. Ensure the Chinese or Asian component suppliers provide RoHS and REACH declarations of conformity for all parts (PCB, battery, camera, speakers). Conduct battery safety testing (IEC 62133, UN38.3) in parallel with RF testing to avoid serial delays.

High

Low Yield and Field Failures in Complex Wearable Assembly

Smart glasses integrate 12 sub-assemblies (frame, PCB, camera, microphones, speakers, battery, swipe sensor, USB-C port, lenses, case, cable) into a 43-gram wearable. First-run yield for complex wearables is typically 60–75%, meaning 25–40% of units fail initial testing due to camera misalignment, speaker connection issues, battery contact problems, or firmware flash failures. Even units that pass factory testing may experience field failures (battery swelling, hinge cracks, USB-C port detachment, camera condensation) within the first 90 days. At 500 units, a 10% field failure rate means 50 returns, overwhelming support and logistics for a startup. Poor yield also inflates cost per unit, as scrap and rework are amortized over the small batch.

Mitigation — Require the EU co-development partner to guarantee a minimum 85% first-pass yield and provide detailed yield data from similar wearable projects. Implement a rigorous factory acceptance test (FAT) protocol: 100% optical inspection of camera alignment, 100% RF testing of Bluetooth pairing, 100% audio testing of speakers/microphones, and 48-hour burn-in testing to catch infant mortality failures. Conduct a pilot run of 50 units with full teardown and failure analysis before committing to the 500-unit batch. Negotiate a warranty clause: manufacturer covers rework or replacement for any unit that fails within 90 days due to assembly defects. Build a 10% spare unit buffer (550 units produced, 500 shipped) to cover DOA (dead on arrival) and early returns. Establish a return and repair process in Portugal (e.g. at Siemens Healthineers PT or Philips PT) for fast turnaround on field failures.

Medium

28-Week Lead Time Vulnerable to Tooling and Testing Delays

The 28-week timeline assumes a linear path: 4 weeks for design freeze and tooling, 6 weeks for PCB fabrication and SMT assembly, 4 weeks for injection molding and frame finishing, 6 weeks for component integration and final assembly, 4 weeks for MentraOS flashing and testing, and 4 weeks for CE/RED certification and packaging. In practice, smart glasses development is highly iterative—camera alignment issues, antenna tuning, battery fit problems, or firmware bugs can each add 2–4 weeks. At pilot scale (500 units), the manufacturer may batch production with other projects, causing delays. First article inspection (FAI) often reveals tolerance issues in the polycarbonate frame or hinge mechanism, requiring mold adjustments.

Mitigation — Build a 6-week contingency buffer into the project plan, targeting first batch delivery in week 22 (best case) with week 28 as the committed date. Use rapid prototyping (3D-printed frames, hand-assembled PCBs) to validate fit, camera alignment, and firmware integration before committing to injection mold tooling. Require the EU co-development partner to provide weekly progress updates and milestone payments tied to deliverables (design freeze, FAI approval, first 50 units tested, CE certification submitted). Conduct a design-for-manufacturing (DFM) review with the partner before tooling kickoff to identify and fix tolerance, assembly, and testing issues early. If possible, split the project into two phases: Phase 1 (100 units, hand-assembled, 18 weeks) for beta testing, then Phase 2 (400 units, tooled production, 22 weeks) to derisk the timeline.

Production timeline

28 weeks to first batch

wk 1wk 30

Design Freeze, Tooling, and Component Procurement

wk 1–5

PCB Fabrication and SMT Assembly

wk 6–11

Injection Molding and CNC Finishing of Frame and Temples

wk 12–15

Camera, Sensor, and Audio Integration

wk 16–20

Battery Assembly and USB-C Soldering

wk 21–22

MentraOS Firmware Flashing and Functional Test

wk 23–26

Prescription Lens Insert Fitting and Charging Case Assembly

wk 27–28

Final QA, CE Labeling, and Packaging

wk 29–30

wk 6–11 is the longest stretch — PCB Fabrication and SMT Assembly takes 6 weeks of the 30 weeks on this build.

What goes into it

6 materials · 7 processes

Materials

polycarbonatelithium_ion_cellsglass_lensesaluminum_alloycopper_pcbsilicon_ics

Processes

pcb_fabricationsmt_assemblyinjection_moldingcnc_machiningfinal_assemblytesting_inspectionpackaging

Design philosophy and best practices

5 principles

Smart glasses squeeze a camera, audio, battery and processor into a frame that must still feel like normal eyewear. Weight, heat, battery life and privacy cues dominate design.

1

Balance weight front to back

Glasses above about 50 g feel heavy. Placing the battery in the temple arms balances the front electronics and reduces nose pressure.

2

Manage heat at the temple

The processor and camera create heat next to the skin. Limit sustained power and spread heat through metal frames or graphite sheets.

3

Make camera use visible

An indicator light when recording is expected by users and regulators, and helps GDPR compliance.

4

Support prescriptions

Lens inserts or frames that accept prescription lenses widen the market. Keep frame geometry close to standard eyewear.

5

Certify radio and battery

Radio Equipment Directive, SAR limits for devices near the head, and IEC 62133 for the battery apply.

Common pitfalls

Avoid

Underestimating hinge wear and flex cables that break after repeated folding.

Avoid

Speakers that leak sound in quiet rooms.

Avoid

Ignoring sweat and skin oils, which corrode contacts and buttons.

Avoid

Battery capacity that cannot support the real camera and AI use time.

10-year evolution forecast (2026-2036)

4 phases

Smart glasses are moving from niche to mainstream consumer use. The trends below are sector directions, not forecasts for any company.

2026–2028

AI assistants on the face

Trend: camera and voice glasses linked to phone-based AI assistants grow as a category.

2028–2031

Displays added

Trend: small waveguide or micro-LED displays become lighter and more common.

2031–2034

Lower power chips

Trend: dedicated chips for vision and audio extend battery life.

2034–2036

Privacy rules mature

Trend: rules on recording in public and data handling shape product features.

Outlook

Expect smart glasses to become a common accessory, with comfort, battery life and privacy design deciding acceptance.

Materials intelligence

9 materials

Nylon or TR90 polymer

Low supply risk

Front frame and temples

Sourced from: Produced in Europe and Asia.

Titanium or stainless steel

Medium supply risk

Hinges and internal frame

Sourced from: Titanium sponge comes mainly from China, Japan and Kazakhstan; stainless is widely made.

Lithium-ion cells

High supply risk

260 mAh battery

Sourced from: Cell production is dominated by China, with Korea and Japan next; EU capacity is growing but limited.

Shipping and pack design follow UN 38.3 and the EU Battery Regulation.

Silicon chips (MCU, radios, drivers)

Medium supply risk

Control and communication electronics

Sourced from: Wafer fabrication is concentrated in Taiwan, Korea, China and the US; packaging is largely in Asia.

CMOS image sensor

Medium supply risk

Camera module

Sourced from: Made mainly in Japan, Korea and China.

Flexible PCB (polyimide)

Medium supply risk

Connections through the hinge

Sourced from: Produced mainly in Japan, Korea, Taiwan and China.

NdFeB magnets

High supply risk

Speakers and charging contacts

Sourced from: China dominates rare earth magnets.

Polycarbonate or CR-39

Low supply risk

Lenses

Sourced from: Widely produced in Europe, the US and Asia.

Copper

Medium supply risk

Wiring, windings and PCB traces

Sourced from: Mined mainly in Chile, Peru and DR Congo; refined widely, including in the EU. Portugal mines copper at Neves-Corvo.

Prototyping and rapid manufacturing in Portugal

5 companies from the atlas

PCB fabrication and SMT assembly

Prototype main boards and flex interconnects.

Electronics manufacturing and testing

Small-batch assembly of the main PCB and camera module.

3DWays

Oeiras

SLA printing, CNC and rapid tooling

Printed frame and temple prototypes for fit and comfort tests.

Rapid tooling and injection moulding

Bridge tooling for frames and charging case.

LISMOLDE

Porto de Mós

Moulds and injection moulding

Production moulds for frame parts and the case.

681 Portuguese manufacturers matched

None cover the whole build — it splits across steps.