• SYB H.A.R.D. anti-radiation device with white 3.5mm headset connector and coiled cable attached to rectangular white protective case.
  • SYB H.A.R.D. Headset Anti-Radiation Device with feature callouts highlighting audio quality, device compatibility, portability, and functionality benefits.
  • SYB H.A.R.D. headset adapter shown with white protective case and black USB-C connector exposed on light background.
  • Man wearing white headphones and SYB H.A.R.D. device while holding mobile phone outdoors, smiling.
  • Woman holding smartphone with SYB H.A.R.D. headset adapter connected via 3.5mm audio jack cable.
  • SYB H.A.R.D. device shown in use with laptop and tablet, demonstrating compatibility with multiple devices.
  • Young person wearing black gaming headset with green accents and microphone, looking down, demonstrating SYB H.A.R.D. headset in use.
  • Man jogging outdoors wearing SYB H.A.R.D. headset with white earbuds, demonstrating portable, lightweight design in park setting.
  • Woman wearing SYB H.A.R.D. headset device while exercising outdoors with dog, smiling.
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SYB H.A.R.D. - Headset Anti-Radiation Device (Choose 3.5mm or USB-C)

SYB H.A.R.D. - Headset Anti-Radiation Device (Choose 3.5mm or USB-C)

Instant anti-radiation upgrade for any wired headset

£38.00 GBP
£38.00 GBP
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Taxes included. Shipping calculated at checkout.
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Turn any wired headset into an anti-radiation headset instantly. The SYB H.A.R.D. (Headset Anti-Radiation Device) absorbs cell phone microwave radiation that would otherwise travel up your headset wire to your head. Unlike air tube technology that degrades audio, H.A.R.D. actually improves sound quality by filtering interference. Tested up to 20 GHz covering 5G, 4G/LTE, 3G, and WiFi. Available in 3.5mm and USB-C.

  • Absorbs radiation traveling up headset wire
  • Tested up to 20 GHz (5G capable)
  • Works on 4G/LTE, 3G, and WiFi
  • Improves audio quality by filtering interference
  • Compatible with any 3.5mm or USB-C headset
  • Simple inline installation
  • No audio quality loss
  • Available in Standard 3.5mm and USB-C
  • Works with any phone or device
  • Compact, portable design
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  1. Select the correct version: Standard (3.5mm) or USB-C
  2. Plug your existing headset into the H.A.R.D. device
  3. Plug the H.A.R.D. device into your phone or audio device
  4. Use your headset normally
  5. The device absorbs radiation traveling up the wire
  6. Enjoy improved audio quality from filtered interference
  7. Works automatically—no settings or activation needed
  8. Take it with you anywhere you use wired headsets

About Shield Your Body

Shield Your Body (SYB) was founded in 2012 by R Blank, an entrepreneur, author, and educator specializing in the intersection of technology and health.

R is the co-author of "Overpowered: The Dangers of Electromagnetic Radiation and What You Can Do About It" (2014), written with his father, Dr. Martin Blank—a pioneering researcher in EMF bioeffects who contributed to the BioInitiative Report. In 2025, R published "Empowered: A Practical Guide to Protecting Yourself from EMF."

Every SYB product is designed with our proprietary SaferBody™ technology—scientifically tested shielding materials that deflect EMF radiation away from your body without blocking your device's signal or draining its battery.

All SYB products are independently tested in FCC-accredited laboratories and proven to block up to 99% of wireless EMF radiation, including 5G frequencies.

As a recognized expert in EMF health and safety, R has appeared on major media platforms including Dr. Phil, ABC News, and Fox News. He also hosts the Healthier Tech Podcast, interviewing experts on living more balanced lives with technology.

Previously, R served on the faculty of USC's Viterbi School of Engineering and UC Santa Cruz, and led a successful software engineering firm in Los Angeles with clients including Apple, Microsoft, and Disney.

SYB products ship from our warehouse in the USA

Shipping

Ships from SYB in the USA.

Free shipping on US orders over $150. Standard delivery: 3-7 business days.

International shipping available to most countries. Delivery times vary. Customer responsible for duties and customs fees.

Returns

SYB offers hassle-free 30-day returns on all purchases.

If you are unsatisfied with your purchase for any reason, please visit: https://www.shieldyourbody.com/syb-returns-policy/ within 30 days of delivery to initiate a return.

Full refund processed within 5-7 business days of receiving your return.

Warranty

SYB products come with a 1 year warranty against manufacturing defects.

For full policy details, please visit: https://www.shieldyourbody.com/warranty-terms/

Description

Turn any wired headset into an anti-radiation headset instantly. The SYB H.A.R.D. (Headset Anti-Radiation Device) absorbs cell phone microwave radiation that would otherwise travel up your headset wire to your head. Unlike air tube technology that degrades audio, H.A.R.D. actually improves sound quality by filtering interference. Tested up to 20 GHz covering 5G, 4G/LTE, 3G, and WiFi. Available in 3.5mm and USB-C.

Features
  • Absorbs radiation traveling up headset wire
  • Tested up to 20 GHz (5G capable)
  • Works on 4G/LTE, 3G, and WiFi
  • Improves audio quality by filtering interference
  • Compatible with any 3.5mm or USB-C headset
  • Simple inline installation
  • No audio quality loss
  • Available in Standard 3.5mm and USB-C
  • Works with any phone or device
  • Compact, portable design
Video
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How to Use
  1. Select the correct version: Standard (3.5mm) or USB-C
  2. Plug your existing headset into the H.A.R.D. device
  3. Plug the H.A.R.D. device into your phone or audio device
  4. Use your headset normally
  5. The device absorbs radiation traveling up the wire
  6. Enjoy improved audio quality from filtered interference
  7. Works automatically—no settings or activation needed
  8. Take it with you anywhere you use wired headsets
About Shield Your Body

About Shield Your Body

Shield Your Body (SYB) was founded in 2012 by R Blank, an entrepreneur, author, and educator specializing in the intersection of technology and health.

R is the co-author of "Overpowered: The Dangers of Electromagnetic Radiation and What You Can Do About It" (2014), written with his father, Dr. Martin Blank—a pioneering researcher in EMF bioeffects who contributed to the BioInitiative Report. In 2025, R published "Empowered: A Practical Guide to Protecting Yourself from EMF."

Every SYB product is designed with our proprietary SaferBody™ technology—scientifically tested shielding materials that deflect EMF radiation away from your body without blocking your device's signal or draining its battery.

All SYB products are independently tested in FCC-accredited laboratories and proven to block up to 99% of wireless EMF radiation, including 5G frequencies.

As a recognized expert in EMF health and safety, R has appeared on major media platforms including Dr. Phil, ABC News, and Fox News. He also hosts the Healthier Tech Podcast, interviewing experts on living more balanced lives with technology.

Previously, R served on the faculty of USC's Viterbi School of Engineering and UC Santa Cruz, and led a successful software engineering firm in Los Angeles with clients including Apple, Microsoft, and Disney.

Shipping & Returns

SYB products ship from our warehouse in the USA

Shipping

Ships from SYB in the USA.

Free shipping on US orders over $150. Standard delivery: 3-7 business days.

International shipping available to most countries. Delivery times vary. Customer responsible for duties and customs fees.

Returns

SYB offers hassle-free 30-day returns on all purchases.

If you are unsatisfied with your purchase for any reason, please visit: https://www.shieldyourbody.com/syb-returns-policy/ within 30 days of delivery to initiate a return.

Full refund processed within 5-7 business days of receiving your return.

Warranty

SYB products come with a 1 year warranty against manufacturing defects.

For full policy details, please visit: https://www.shieldyourbody.com/warranty-terms/

Turn ANY 3.5mm Headset into an Anti Radiation Headset– WITHOUT Sacrificing Sound Quality.

  • 5G Tested, up to 20 GHz. Also works on 4G/LTE, 3G, & WiFi.
  • Absorbs cell phone microwave radiation.
  • Unlike air tube technology with inferior audio quality, H.A.R.D. (Headset Anti Radiation Device) actually improves your sound quality by filtering interference.
  • Compatible with any device and headset with a standard 3.5mm or USB-C audio jack.
    • For 3.5mm devices, pick the "Standard" connection.
    • For USB-C devices, pick the "USB-C" connection (includes all Android devices and all iPhones 15 and later).
  • All your headset controls will still work.
  • Lightweight and portable. No batteries required.

This SYB product is shipped by Shield Your Body from the USA

Frequently Asked Questions

How does HARD turn regular headphones into anti-radiation headphones?
HARD absorbs microwave radiation traveling through your headphone cable before it reaches your head. Attach it to any 3.5mm headset and the device filters radiation while maintaining audio quality. It's retrofit protection for existing headphones.
How is HARD different from air tube headphones?
Air tubes prevent radiation by creating a gap in the wire path. HARD actively absorbs radiation in the existing wire. Both approaches reduce head exposure—HARD lets you use headphones you already own rather than buying new ones.
Does HARD work with 5G and all current wireless frequencies?
Yes, HARD is tested up to 20 GHz, covering 5G, 4G/LTE, 3G, and WiFi frequencies. The broad frequency absorption ensures protection against current and many future wireless technologies. Testing confirms effectiveness across the spectrum.
Does adding HARD affect my audio quality?
HARD is designed to absorb radiation without sacrificing sound quality. The technology targets electromagnetic frequencies, not audio signals. You maintain the sound performance of your existing headphones while adding radiation protection.
Will HARD work with my specific headphones?
HARD works with any headphones using a 3.5mm connector. For newer phones without headphone jacks, use it with the adapter connecting your headphones. The device attaches to the cable regardless of headphone brand or style.