Product Overview
Jinghao A420 – a rechargeable analog hearing aid designed for adults with mild hearing loss. As an FDA‑listed over‑the‑counter hearing aid, it delivers reliable sound amplification with a modern, ultra‑light in‑ear design. Perfect for distributors, hearing care retailers, and private‑label partners looking for best hearing amplifiers for elderly users.
Key Features
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Analog Signal Processing with Intelligent Noise Reduction – clear, natural sound for everyday use.
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2 Hearing Modes – Basic mode + Noise‑canceling mode for quieter listening in challenging environments.
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Smart Transparent Charging Indicator & Type‑C port – easy status check.
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48‑Hour Total Power Duration – charging case provides 3 full recharges; hearing aid itself runs 22+ hours per charge.
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Quick Charge – 10 minutes of charging gives 3‑4 hours of use.
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Auto On/Off – powers on when worn, off when removed (no manual button).
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FDA OTC Compliant – listed on FDA database (Registration #3011586575, Model JH‑A420).






Technical Specifications (ANSI S3.22‑2014)
| Parameter | Value |
|---|---|
| Max Output (OSPL90) | <117 dB |
| HFA Full‑on Gain | 26 dB ±5 dB |
| THD | 2% |
| Equivalent Input Noise | <32 dB |
| Frequency Range | 250 Hz – 5000 Hz |
| Latency | <15 ms |
| Battery Life (hearing aid) | ≥16 hours (lab avg 22h) |
| Charging Case Recharges | ≥3 times |
| Total Power Duration | ~48 hours |
✅ Fully compliant with FDA OTC hearing aid regulations (Mode 1 parameters).

⚠️ This document contains screenshots from the FDA database and is not an official certificate.
1.Visit: https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfRL/TextSearch.cfm
2.Search for “K221052”
3.Compare: Decision Date,Sponsor Name,Product Code etc..
RECOMMENDED PRODUCTS(hearing aids over the counter)
JH-D58,JH-D59FT,JH-DW3F,JH-DW5A,JH-A61HT,JH-A40C,JH-A32E
What’s in the Box (Customizable)
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Charging Case (Type‑C)
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2 × Hearing Aids (left/right)
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Multiple Eartips (S/M/L)
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USB Cable
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Quick Start Guide & User Manual (multi‑language available)
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Charging brush
OEM partners can customize box design, manual languages, and accessory bundles.

B2B Advantages – Why Partner with Jinghao?
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FDA Registered Manufacturer – Huizhou Jinghao Medical Technology Co., Ltd (Reg #179633).
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Over‑the‑Counter & Prescription capabilities – we supply both markets.
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Private Label / OEM – your logo, your packaging, your manual language.
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Bulk Pricing – competitive factory‑direct rates, low MOQ options.
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Marketing Support – product photos, spec sheets, videos, and market data.
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Global Shipping – experienced exporter with full customs documentation.

Target Keywords – Covered Naturally
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analog hearing aids – the A420 is a pure analog device with noise reduction.
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over‑the‑counter hearing aids – FDA OTC listed, no prescription needed.
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best hearing aid earbuds – discreet in‑ear fit, comfortable for all‑day wear.
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best hearing amplifiers for elderly – simple auto on/off, large battery indicator, volume buttons.
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mild hearing loss and hearing aids – specifically designed for mild to moderate loss (26dB gain).
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amplified hearing aids – provides clear amplification for daily conversations.
Marketing Resource Package (for B2B Clients)
Let’s see what we can provide for your marketing needs:
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📸 High‑resolution product photos (studio & lifestyle)
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🎬 Demonstration videos (usage, charging, cleaning)
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📄 Technical specification sheet (PDF)
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📊 Competitive pricing & tiered wholesale list
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📈 Market research – OTC hearing aid trends in the US
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🖨️ Print‑ready brochures and catalog pages
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🏷️ Custom box design templates
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🌐 Multi‑language user manuals (English, Spanish, German, etc.)
Why Choose A420 for Your Portfolio?
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Ultra‑light & invisible – mini in‑ear design, wearer forgets it’s there.
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48‑hour total battery – perfect for travel and elderly users who forget to charge daily.
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Two listening modes – improves user satisfaction in noisy places.
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FDA compliance – reduces your regulatory risk.
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Proven manufacturer – Jinghao has 15+ years of medical device experience.
Contact Our B2B Team
Ready to stock or private‑label the A420?
📧 service@jhhearingaids.com
📞 +86-3790758128
Related Types of Blogs:
1.https://www.jhhearingaids.com/what-is-the-difference-between-digital-and-analog-hearing-aids/
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