--- title: Buy IDUN Guardian 4 Starter | Exclusive Offer description: Unlock your cognitive readiness with in-ear EEG. Get the IDUN Guardian 4 Starter for CHF 999 (Save CHF 300). Includes raw data access, SDK & real-time classifiers. Order now. image: https://iduntechnologies.com/hubfs/websiteIDUN_preview.png --- [![0038d341-b6eb-4cbe-ac38-bcbd794c4d79-1654710055388-1](https://iduntechnologies.com/hubfs/0038d341-b6eb-4cbe-ac38-bcbd794c4d79-1654710055388-1.png)](https://iduntechnologies.com) - [IDUN Guardian](https://iduntechnologies.com) - [For Product Teams](https://iduntechnologies.com/brain-sensing-integration-package?hsLang=en) - [For Developers](https://iduntechnologies.com/algorithm-demos?hsLang=en) - [About us](https://iduntechnologies.com/our-company/about-us?hsLang=en) - [Our Company](https://iduntechnologies.com/our-company/about-us?hsLang=en) - [Milestones](https://iduntechnologies.com/our-company/milestones?hsLang=en) - [Ethics](https://iduntechnologies.com/our-company/ethics-charter?hsLang=en) - [Contact Us](https://iduntechnologies.com/our-company/contact-us?hsLang=en) - [Science](https://iduntechnologies.com/science?hsLang=en) - [Blog](https://iduntechnologies.com/idun-blog?hsLang=en) [DOCS](https://docs.idunguardian.com/) [LOG IN](https://console.idunguardian.com/) # IDUN GUARDIAN 4: PRESALE ## The evolution of human-computer interaction. [GET NOW — PRESALE](https://iduntechnologies.com#get-idun-4) chevron\_left ![Product Image](https://iduntechnologies.com/hubfs/cover.png) chevron\_right ![Thumb](https://iduntechnologies.com/hubfs/cover.png) play\_arrow ![Thumb](https://iduntechnologies.com/hubfs/img-02-1.png) ![Thumb](https://iduntechnologies.com/hubfs/img-04-2.png) ![Thumb](https://iduntechnologies.com/hubfs/img-01-1.png) ![Thumb](https://iduntechnologies.com/hubfs/idun-guardian-glow-01.png) ![Thumb](https://iduntechnologies.com/hubfs/idun-guardian-glow-03.png) ![Thumb](https://iduntechnologies.com/hubfs/idun-guardian-glow-04.png) ![Thumb](https://iduntechnologies.com/hubfs/idun-guardian-glow-05.png) ![Thumb](https://iduntechnologies.com/hubfs/idun-guardian-glow-06.png) ![Thumb](https://iduntechnologies.com/hubfs/idun-guardian-glow-07.png) ![Thumb](https://iduntechnologies.com/hubfs/idun-guardian-glow-08.png) # IDUN Guardian 4 Starter CHF 999.- **CHF 1'299.- after presale** The IDUN Guardian 4 introduces brain-sensing capabilities to consumer earbuds. By integrating precise motion sensing, sound and neural signal processing, the IDUN Guardian 4 unlocks a new level of human-computer interaction, bridging the gap between brain activity, movement, and digital experiences. [See all specs](https://iduntechnologies.com#tech-specs) - Webapp / SDK / API Access - Raw EEG and IMU access - Real-time and batch data (csv.) access - 12 hours on device storage - Cloud connection needed ### Configure your Guardian 4 Starter Real-time Classifiers and Batch Reports + CHF 29.- /month **Was CHF 50.-/month** Our real-time classifiers, accessible via the Python SDK, Public API or through the webapp, enable immediate insights from in-ear EEG signals. Monthly | Yearly Hardware Unlock for Offline usage + CHF 399.- (one-time) **Was CHF 699.-** Direct access to raw data without Cloud Connection, On-Device Classifiers. Only available through Python SDK and Public API. [ACCESS THE PRE-SALE](https://buy.stripe.com/7sY8wQ0gMbN40Hx27y3F61w) [I need a quote](https://f6k4x.share-eu1.hsforms.com/2j9fVcE7tR0iDni8wzsByjA) ## Beyond data, real insights ### Unlock Your Cognitive Readiness The IDUN Guardian 4 translates your session into a clear "Cognitive Readiness" score. Track your progress and learn what it takes to perform at your peak. ![icp-1](https://iduntechnologies.com/hs-fs/hubfs/icp-1.png?width=521&height=1127&name=icp-1.png) ![icp-2](https://iduntechnologies.com/hs-fs/hubfs/icp-2.png?width=521&height=1127&name=icp-2.png) ![icp-3](https://iduntechnologies.com/hs-fs/hubfs/icp-3.png?width=521&height=1127&name=icp-3.png) ![icp-4](https://iduntechnologies.com/hs-fs/hubfs/icp-4.png?width=521&height=1127&name=icp-4.png) ![icp-5](https://iduntechnologies.com/hs-fs/hubfs/icp-5.png?width=347&height=512&name=icp-5.png) ![icp-6](https://iduntechnologies.com/hs-fs/hubfs/icp-6.png?width=347&height=512&name=icp-6.png) ### Your Mind in Real-Time Live neurofeedback visualizes your engagement and relaxation. Actively guide your mental state as it happens. ![](https://iduntechnologies.com/hs-fs/hubfs/Screenshot%202025-11-16%20at%2017.10.36%201.png?width=349&height=347&name=Screenshot%202025-11-16%20at%2017.10.36%201.png) ### Visualize Your Journey The progress graph pinpoints when your focus peaked or relaxation deepened, helping you replicate those results. ![](https://iduntechnologies.com/hs-fs/hubfs/Screenshot%202025-11-16%20at%2017.06.00%201.png?width=341&height=290&name=Screenshot%202025-11-16%20at%2017.06.00%201.png) ## Need clarification? All frequently asked questions are here. For more safety information, check [our documentation](https://docs.idunguardian.com/en/page-1e-safety) or [book a meeting with us](https://meetings-eu1.hubspot.com/max-jelinski?uuid=b9202eec-18e8-458c-a9d0-1df5ade06a26) What is EEG? add EEG (Electroencephalography) is a non-invasive neuroimaging technique that records the brain's electrical activity using conductive sensors placed on the scalp or in our case, in the ear. It is a widely adopted method in neuroscience research and is being used for consumer neuro-feedback and wellness products. I don’t know anything about EEG, can I still work with the IDUN Guardian? add Even though you will be able to enjoy the fullest of our device if you have EEG know-how, you can still work with the IDUN Guardian without being an expert. Our device comes with an extensive list of classifiers that analyze the raw EEG data for you, such as frequency band classification, jaw clench, and eye movement detection, making it easy to develop applications even without prior EEG knowledge. [Find more information here.](https://iduntechnologies.com/algorithm-demos?hsLang=en)   Is in-ear EEG a reliable method of measuring EEG? add In-ear EEG has been validated in research for the past decade in different use cases. In-ear EEG provides an ease of comfort and wearability that full-scalp EEG cannot achieve but it cannot provide the same richness of information such as spatial localisation as the full-scalp EEG does. [Please find here our white paper](https://iduntechnologies.com/science?hsLang=en) and peer-reviewed literature for more details. How many channels does it have? add 2 that are both located in the ear-canal. Please see the specification for more information. Does it have audio? add Yes, the IDUN Guardian 4 is audio capable, making it a true earbud like you are used to on top of providing you with brain and movement data. Is the IDUN Guardian 4 a medical device? add No, the IDUN Guardian 4 is not a medical device. The IDUN Guardian 4 is a consumer wellness and research device and is not intended to diagnose, treat, cure, or prevent any disease or medical condition. The information provided by the device is for informational purposes only and should not be used as a substitute for professional medical advice, diagnosis, or treatment; always consult a qualified healthcare professional with any health concerns. The IDUN Guardian is intended for research purposes only and has not been evaluated by the FDA.   Where is the data streamed and stored? add The data is streamed and stored on our EU cloud in Germany. For more information please visit our data privacy policy and neuroethics charter. I can’t stream any data to an external cloud, do you have a solution? add Yes, please add the Hardware Unlock for Offline Usage to your IDUN Guardian 4 Starter. You can buy this at any time. Be aware that this add-on only works with our SDK and API. When will it ship? add We are planning to be ready with CE and FCC certification for the consumer market in Q2 2026 and therefore able to ship by Q2 2026. ## Product details Description add Easily monitor your brainwaves and develop innovative applications with the IDUN Guardian 4. These earbuds enable you to listen to music while recording in-ear electroencephalography (EEG) data and movement (IMU) while ensuring a fast, stable, and efficient wireless communication with its advanced Bluetooth 5.4, LE Audio, and Wi-Fi capabilities.With the IDUN Guardian Earbuds, EEG recording and monitoring can be done  unsupervised in a home environment, providing information on various biometrics. To simplify your application development, even without prior EEG knowledge, the Earbuds come with an  extensive list of classifiers that analyze the raw EEG data for you, such as frequency band classification, jaw clench, and eye movement detection. EEG Earbuds Specifications add #### Connectivity Bluetooth 5.4, A2DP/HFP, Bluetooth LE  --- #### Audio Driver Balanced Armature Driver 111 dB SPL @ 100mV, Max SPL 120–126 dB, THD 0.3% @ 94dB, 0.4% @ 100dB --- #### Dryode® Duo 2CH Eartip Dry-contact EEG sensors for stable, high-quality signal acquisition Comfortable for long-term wear without gel or preparation Impedance \< 20 - 200 kOhm (typical) 1 year average usage time --- #### Analog Front-End 2-channel ultra-low power AFE  High input impedance (\>1GΩ), low noise (0.22μVRMS) 250 Hz Sampling Rate CMRR \> 110 dB AC Dynamic Range 200 mVpp BioZ channel for respiration tracking and ETI characterization Active right leg drive (RLD) circuit for noise suppression --- #### IMU 9-axis IMU (accelerometer + gyroscope + magnetometer) --- #### Software Web and mobile apps for data recording, impedance, battery check, EEG streaming, insights Sleep and daytime reports, preset experiments, CSV export TS SDK for customized app workflows Python SDK & Public API for real-time EEG, IMU, classifier access Secure API-key authentication, LSL support for live streams --- #### Real-Time Classifiers Jaw Clench Detection for hands-free control Eye Movement Tracking (left/right) for interaction monitoring FFT for real-time spectral decomposition of EEG signals Fatigue tracking and break management (in development) Relaxation and calm (in development) Cognitive Workload (in development) Activity Listening effort (in development) Peak Alpha (in development) Brain-Battery (cognitions, stress, recovery, in development) Web App & Mobile Apps (Android, iOS) add A user-friendly solution for recording and managing EEG data without coding. Ideal for users seeking an intuitive interface to visualize, analyze, and manage brain data. - Device onboarding and FAQ - Record, store, and download EEG and IMU data in CSV format - Monitor connectivity and battery life - Generate sleep and daytime reports for cognitive and fatigue assessments - Live stream EEG data and insights (raw, filtered and classifier output) - Preset experiments to simplify EEG-based studies TypeScript SDK add Our TS SDK is the easiest and fasted way for developers to build custom applications on top of the Guardian ecosystem or integrate into their existing solutions. Python SDK & Public API add For developers and researchers who need batch or real-time access to EEG or movement data access or derived insights: - Record, store, and download EEG data for advanced analysis. - Impedance testing and battery monitoring. - Secure API-key authentication for user privacy and data security. - Access real-time inferences from raw EEG, IMU, and filtered data. - LSL (Lab Streaming Layer) support for live data processing. #### Guardian Brain Battery(r) - Jaw-Clench Detection – Recognize jaw muscle activity for hands-free control. - Eye-Movement Tracking – Detect left and right eye movements in real time. - FFT Analysis – Decompose EEG signals into frequency bands for deeper cognitive state insights. These classifiers are fully accessible via the Python SDK and Public API, enabling seamless application integration. Classifier coming soon to IDUN Guardian (currently in development): - Fatigue tracking and break management - Relaxation and calm score - Cognitive Workload and Risk for productivity and high-stakes environments - Activity detection to contextualize brain data - Brain-Battery, cognitions, stress, recovery ![Untitled design (18)](https://iduntechnologies.com/hubfs/Untitled%20design%20(18).png) IDUN Technologies AG Vega-Strasse 3 8152 Glattpark (Opfikon) Switzerland ### IDUN - [Privacy Policy](https://iduntechnologies.com/privacy-policy/?hsLang=en) - [IDUN Customer Portal](https://billing.stripe.com/p/login/9AQ4hwdE5aZLdTG3cc) - [Terms & Conditions](https://iduntechnologies.com/general-terms-and-conditions?hsLang=en) - [Ethics](https://iduntechnologies.com/our-company/ethics-charter?hsLang=en) - [Press Kit](https://iduntechnologies.com/press?hsLang=en) © 2026 IDUN Technologies AG All rights reserved [Powered by Atlas - a B2B SaaS HubSpot theme](https://www.kalungi.com/atlas-hubspot-theme-for-b2b-saas-software)