iBrain FC31-E Anti-Radiation Earbuds – Protection and Optimal Sound Quality

The iBrain FC31-E black air tube stereo anti-wave earbuds significantly reduce low- and high-frequency electromagnetic waves emitted by mobile phones while providing optimal acoustic quality.
Using air tube earbuds instead of traditional wired models prevents high-frequency signals from the smartphone being transmitted to the ears via the wire. Thanks to an 18 cm stethoscopic air tube, this system eliminates up to 98% of electromagnetic pollution in the ears.

This model is waterproof, equipped with a microphone and ambient noise reduction. It is perfectly suited for many uses: mobile phones, computers, hi-fi headphones, portable media players, video games, etc.
Furthermore, it does not generate any magnetic fields related to an electronic amplifier on the head. It is particularly suitable for people who listen to music for long hours, including on FM players. Its air tube and shielded metal wire limit exposure to FM/AM radiation, typically generated by earphones acting as radio antennas.

Tip for smartphone calls: For optimal protection against radiation, keep your phone as far away as possible during calls. Ideally, turn off mobile data, Wi-Fi, Bluetooth, and NFC, and only use your device's phone function.

Features of the iBrain FC31-E Black Stethoset Air Tube Anti-Radiation Earpiece

The iBrain FC31-E Black Stethoset Air Tube Earpiece uses stethoset air tube technology, ensuring rich, high-quality sound without loss of sound. Thanks to its compact micro-earpieces, it offers excellent acoustic performance while minimizing exposure to electromagnetic waves.

Technology and Operation

The iBrain earpiece significantly reduces the propagation of low frequencies (LF) thanks to an innovative acoustic system with an integrated electronic amplifier. Its principle is based on the same mechanism as a medical stethoscope: a flexible plastic tube transmits the sound, thus avoiding the conduction of waves via a traditional cable.

The latest generation of iBrain sound amplification technology guarantees crisp and clear sound, improving clarity and listening comfort.

Design and comfort

• Two molded metal earpieces with ergonomic earplugs effectively isolate ambient noise.
• Comes with two sizes of soft, non-toxic silicone eartips for a perfect fit and optimal comfort.
• Particularly suitable for children and people with small ears, thanks to a canal limited to 7 mm.
• Double-layer silicone eartips, safe, comfortable, and environmentally friendly. the environment.

Safety and protection against waves

The earpiece contains no speaker integrated into the earplug, thus preventing any direct exposure to the speaker's magnetic field (often measured at 1000 gauss on conventional models). This effectively protects the brain and eardrums from electromagnetic radiation.

Thanks to its optimized resonance chamber, the sound quality remains excellent, whether listening to music or making calls, without being affected by the waves that travel up the cables of traditional earbuds.

Controls and Built-in Microphone

The earbud is equipped with a mini on/off switch with built-in microphone on the cable:

• Short press: Answer or end a call.
• Long press: Pause.
• Double-click: Skip to the next song.
• Triple-click: Skip back to the previous song. previous.

The high-performance microphone picks up voice without needing to be placed near the mouth.

💡 Note: All these features may vary depending on the smartphone model used. It is advisable to check their compatibility with your phone.

Compatibility and Adapters

With the current trend toward removing 3.5mm jacks on smartphones, adapters are required:

• For iPhone up to model 14 → Lightning to 3.5mm jack adapter.
• For iPhone 15 and above / Android with USB-C → USB-C to 3.5mm jack adapter.

Technical Specifications

• Total Cable Length: ±120 cm
• Air Tube Length: ±18 cm
• Color: Black, Clear Air Tube
• Built-in Microphone with Mute Button
• Microphone Sensitivity: -42 ± 3 dB
• Earphone Size: 7 mm
• Speaker Impedance: 16 Ohms
• Sensitivity: 94 ± 3 dB at 1 kHz
• Frequency Response: 20 Hz - 20 kHz
• Power Nominal power: 2 mW (max 6 mW)
• Connector: 3.5 mm jack, 4-pole, gold-plated

Package Contents

• iBrain Anti-Radiation Earbuds
• 4 Silicone Eartips (2 sizes)
• 2-Year Warranty

Warranty Conditions

• Defects related to normal use are covered for 2 years.
• Not covered: damage caused by accident, misuse, modification, or unauthorized disassembly.

✅ Tips to extend the life of your Headset

1. Do not leave the headset plugged into your phone when storing it, as this can weaken the cable.
2. Avoid wrapping the cord around the phone to prevent premature wear.
3. Use a storage pouch to protect the product when traveling.

Hearing Safety

To protect your hearing, it is recommended not to exceed 85 dB:

• Normal conversation: 60 dB
• Rock concert: 110 dB

💡 OSHA (USA) recommended exposure limits :

• 90 dB → 8 hours
• 95 dB → 4 hours
• 100 dB → 2 hours
• 105 dB → 1 hour
• 110 dB → 30 minutes

Before inserting the earbuds, turn down the volume, then gradually adjust it to a comfortable level.

⚠️ For iPhone users: When an incoming call interrupts your music playback, the volume will automatically reset to zero. Remember to manually increase it in your music app after the call.

❌ No returns or exchanges are possible for open earbuds, due to hygiene reasons.

This text retains all essential information while improving clarity and fluidity.