Fanmuran Bluetooth 5.3 Invisible Sound Amplifier Earbuds

Experience clearer, more vibrant sound with the Fanmuran Bluetooth 5.3 Self-Adjusting Sound Amplifier Earbuds — an invisible, in-ear personal sound amplifier that doubles as a full-featured Bluetooth earphone. Designed for effortless daily use, these discreet TWS earbuds require zero manual calibration after startup, making them ideal for seniors and anyone who wants better audio clarity right out of the box.

Powered by advanced multi-channel digital chip technology, these earbuds intelligently filter background noise across multiple frequency bands for a richer, more three-dimensional listening experience. The large diaphragm delivers up to 3× enhanced sound amplification, while the real copper ring (F8) speaker ensures warm, stable audio reproduction whether you're having a conversation, watching TV, or enjoying music.

Key Features

• Zero-Setup Auto Adjustment: Simply power on and go — no manual debugging or calibration needed.
• Multi-Channel Digital Noise Filtering: Advanced chip reduces background noise across different frequency bands for cleaner, clearer audio.
• 3× Enhanced Sound Amplification: Large diaphragm design delivers more immersive, three-dimensional sound quality.
• Bluetooth 5.3 Wireless: Enjoy a stable, low-latency connection up to 10–15 metres for calls, music, and media.
• Dual-Purpose Design: Functions as both a personal sound amplifier and a Bluetooth earphone — perfect for phone calls, music, and movies.
• Eco-Friendly Silicone Eartips: Soft, body-safe silicone reduces feedback whistling and gently protects the ear canal.
• Daily Waterproof: Splash and sweat resistant for everyday use.
• Long Battery Life: Up to 5 hours of listening or call time per charge; full charge in approximately 1 hour.
• Universal Fit: Compact, invisible in-ear design fits both ears comfortably.
• Available in 4 Colours: Black, Gold, Pink, and White.

Technical Specifications

• Material: PC + ABS
• Bluetooth Protocol: 5.3
• Speaker: F8 Real Copper Ring
• Transmission Range: 10–15 m
• Battery Capacity: 35 mAh
• Charging Interface: Android (Micro-USB)
• Charging Time: ~1 hour
• Listening / Call Time: ~5 hours
• Impedance: 32 Ω
• Frequency Response: 20 Hz – 20 kHz
• Sensitivity: 115 dB/mW
• Waterproof: Daily waterproof (splash resistant)
• Size: 2.2 × 1.5 × 1 cm
• Colours: Black, Gold, Pink, White

What's in the Box

• 1 × Sound Amplifier Earbud
• 1 × Charging Cable

Note: Please allow ±1–2 cm variance due to manual measurement. Actual colour may vary slightly from images depending on your display settings.

Made in China.

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For more information on how personal sound amplifiers work and how they differ from regulated hearing devices, visit the U.S. Food & Drug Administration: PSAPs vs. Hearing Aids.

Learn more: Apple headphones

Frequently Asked Questions

Q: What is the difference between this Bluetooth sound amplifier and a medical hearing aid?

A: This Fanmuran Bluetooth 5.3 device is a Personal Sound Amplifier Product (PSAP) — a consumer electronic that amplifies environmental sounds for people with typical hearing who want enhanced audio clarity. It is not a prescription medical hearing aid. For advice on regulated hearing devices, please consult a licensed audiologist or healthcare provider. The FDA provides a helpful comparison at fda.gov.

Q: How long does the battery last and how do I charge it?

A: The built-in 35 mAh battery provides approximately 5 hours of continuous listening or call time on a single charge. Charging takes roughly 1 hour using the included Android (Micro-USB) charging cable.

Q: Can I use this device for making phone calls and listening to music as well?

A: Absolutely! Thanks to Bluetooth 5.3 connectivity with a range of up to 15 metres, these earbuds seamlessly pair with smartphones, tablets, and other Bluetooth-enabled devices for hands-free calls, music streaming, and watching videos — in addition to their sound amplification function.

Q: Is it waterproof and can I wear it during light activity?

A: Yes. The earbuds feature daily waterproof protection, making them splash and sweat resistant for everyday activities. They are not designed for submersion in water.

Q: How long does it take to adapt to using this sound amplifier?

A: Most users find it helpful to allow approximately four weeks to fully adjust to the amplified sound environment. Start with shorter sessions and gradually increase wear time as you become accustomed to the enhanced audio experience.