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$499.00$3,799.00
HearSilk

ReSound Key 398 SP BTE Hearing Aid – 8 Channels, Size 675 Battery, Super Power, Bluetooth

ReSound Key 398 SP BTE Hearing Aid – 8 Channels, Size 675 Battery with Super Power Amplification Reliable High-Power Hearing Solution for Severe to Profound Hearing Loss The...

4.7/5 (226 Reviews)
340+ sold ✓ Verified Purchases
$499.00 $3,799.00 86% OFF
🔥 You save $3,300.00 compared to clinic price
Style: Right
⚡ Buy Now — Get it in 5–8 Days
Free DHL Express Shipping
Free Programming Included
15-Day Risk-Free Returns
3-Year Warranty
Free Professional Programming — How It Works
  1. Place your order today
  2. Email your audiogram to sales@hearsilk.com
  3. We program it within 1–2 business days
  4. Ships to your door — unbox, hear clearly
Added to Wishlist!
Best Value Hearing Aid USA Consumer Choice 2024
4.8 / 5 Stars 2,400+ Verified Reviews
FDA Registered Medical-grade certified
Audiologist Approved Clinically validated design
Ships from USA Free 2-day · Easy returns

What Makes This Special?

🧠
ReSound Key Platform

Reliable entry-level platform designed for natural sound and everyday hearing comfort.

🔊
8-Channel Processing

Provides essential sound clarity with basic customization for daily listening needs.

💪
Super Power (SP) Amplification

High output power suitable for severe to profound hearing loss users.

🔋
Size 675 Battery

Large zinc-air battery offers long-lasting performance ideal for high power devices.

📡
Bluetooth Connectivity

Supports direct streaming from compatible smartphones for calls and media.

📱
ReSound Smart 3D App

Adjust volume, programs, and personalize settings easily via mobile app.

🔇
Noise Reduction & Directionality

Reduces background noise and focuses on speech for improved clarity.

🔁
Feedback Cancellation

Minimizes whistling sounds for a stable listening experience.

👂
Durable BTE Design

Strong and easy-to-handle design suitable for daily long-term use.

Who Is This For?

The ideal choice for:

  • Individuals with severe to profound hearing loss
  • Users needing high amplification at lower cost
  • People who prefer long battery backup instead of rechargeable
  • Users looking for basic but reliable performance
  • Adults preferring strong and durable BTE design
  • First-time users in SP category
  • Customers seeking budget-friendly ReSound hearing aid
PRICE COMPARISON
Local Audiologist Clinic $3,799.00
HearSilk Price $499.00
You save $3,300.00 — same device ✅

Full Specifications

Form Factor
BTE SP (Behind-the-Ear Super Power)
Technology Level
Essential (ReSound Key 3 Series)
Channels
8 Channels
Fitting Range
Severe to Profound Hearing Loss (60–120 dB)
Battery
Size 675 Zinc-Air
Battery Life
Approx. 7–10 days
Wireless
2.4 GHz Bluetooth Connectivity
Connectivity
Made for iPhone & Android (ASHA limited support)
App Control
ReSound Smart 3D App
Directional System
Adaptive Directionality
Noise Management
Basic Noise Reduction
Feedback Cancellation
Advanced Feedback Suppression
Waterproof
Basic Moisture Protection
Warranty
2 Years Manufacturer

What's in the Box

🦻 Hearing Aid(s)
🔘 Ear Tip/ Tube
🧰 Cleaning Toolkit
📖 User Manual
📦 Original Branded Box

Description

ReSound Key 398 SP BTE Hearing Aid – 8 Channels, Size 675 Battery with Super Power Amplification

Reliable High-Power Hearing Solution for Severe to Profound Hearing Loss

The ReSound Key 398 SP BTE is a powerful behind-the-ear hearing aid designed for individuals with severe to profound hearing loss. Built on the trusted ReSound Key platform, it features 8 WARP processing channels to provide clear sound, stable amplification, and dependable everyday performance.

With its Size 675 battery, this model ensures long-lasting usage and high output, making it ideal for users who require strong amplification and reliability.

Key Features & Benefits

  • 8 WARP Processing Channels:
    Provides balanced sound clarity and stable amplification.
  • ReSound Key Platform:
    Ensures reliable and consistent hearing performance for daily use.
  • Super Power Amplification:
    Delivers high output suitable for severe to profound hearing loss.
  • Natural Directionality II:
    Maintains awareness of surroundings while improving speech understanding.
  • Noise Tracker II:
    Reduces background noise without affecting speech clarity.
  • Wind Guard Technology:
    Minimizes wind noise for better outdoor listening.
  • DFS Ultra Feedback Cancellation:
    Prevents whistling and ensures stable amplification.
  • Size 675 Battery Powered:
    Provides long-lasting performance with easy battery replacement.

Connectivity & Smart Features

  • 2.4 GHz Bluetooth wireless connectivity
  • Direct streaming from iPhone & Android devices
  • ReSound Smart 3D App for control and personalization
  • ReSound Assist for remote adjustments
  • Compatible with ReSound wireless accessories (TV Streamer, Multi Mic)

Technical Overview

Model ReSound Key 398 SP BTE
Platform ReSound Key
Technology Level 3 (Mid-Level Entry)
Processing Channels 8 Channels
Style Super Power BTE (SP BTE)
Fitting Range Severe to Profound Hearing Loss
Battery Type Size 675 Zinc-Air
Connectivity Bluetooth (2.4 GHz)
App Support ReSound Smart 3D App
Noise Management Noise Tracker II + Wind Guard
Feedback Control DFS Ultra

Who Should Choose This Hearing Aid?

  • Individuals with severe to profound hearing loss
  • Users requiring Super Power BTE amplification
  • Patients needing essential digital hearing technology
  • People who prefer reliable battery-operated hearing aids
  • Adults who need strong and stable amplification for everyday listening
  • Users looking for simple controls and dependable performance
  • Anyone who refuses to pay $3,000–$5,000 at a clinic

What’s Included in the Box?

  • ReSound Key 398 SP BTE hearing aid(s)
  • Battery (Size 675)
  • Ear hook / tubing
  • User documentation

Need Help Choosing?

Our hearing specialists can help you select the right hearing aid based on your hearing profile and lifestyle needs.

Contact us for expert consultation and professional fitting support.

Frequently Asked Questions

Yes, 100%. We are an authorized reseller. Every device has original manufacturer warranty and serial number registered to you.
After ordering, email your audiogram to support@hearsilk.com. Our audiologists program to your exact prescription. Ships pre-programmed.
We offer remote fine-tuning support. Email or call us — our audiologists adjust your program remotely, usually within 1 business day.
Yes — 30-day risk-free returns. Free pickup, full refund (unopened/unprogrammed devices only).
Works with both iPhone (Made for iPhone certified) and Android. Full control via manufacturer app.
1–3 year manufacturer warranty depending on technology level. All claims handled by HearSilk.

Product Video

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The Hearing Aid Problem

You've Been Told Hearing Aids Cost $4,000–$6,000.

So you put it off. For months. Maybe years. You've been missing conversations, TV, music — and your quality of life.

See Your Exact Savings
Select a HearSilk product below to see how much you save compared to a clinic.
Free programming Free US shipping 15-day returns

The average American waits 7 years before getting help with hearing loss.

— National Institute on Deafness
Provider
Your Cost
Programming
Delivery
Audiologist Clinic
$3,000–$6,000
Included
Same week
Big Box Store
$1,500–$3,000
Extra cost
1–2 weeks
HearSilk Best Value
$800–$1,800
Free, by audiologists
3–5 days
Not sure which product? Select your hearing loss level:
Frequently Asked Questions
Yes! Every HearSilk hearing aid comes with free programming by our licensed audiologists. We handle everything remotely — no clinic visit needed.
We ship free from our US warehouse. Most orders arrive in 3–5 business days. You'll receive a tracking number as soon as your order ships.
We offer a 15-day risk-free return policy. If you're not satisfied for any reason, simply return the hearing aids for a full refund — no questions asked.
Absolutely. All HearSilk hearing aids are FDA registered, clinically-tested, and programmed by licensed audiologists. The same technology used in clinics, at a fraction of the cost.
Audiologist clinics charge for office visits, staff, overhead, and markup. We sell direct-to-consumer online — cutting out all those middlemen costs and passing the savings to you.
The HearSilk Solution

Same Quality. A Fraction of the Cost.

$3200
Average savings vs. audiologist clinic
🚚 Free Shipping
🎧 Free Programming
🔄 15-Day Returns
💳 100% Genuine Product
  • FDA registered, audiologist-grade hearing aids
  • Free programming by licensed audiologists
  • Ships from USA — arrives in 3–5 business days
  • 15-day risk-free return policy
  • Bluetooth streaming to iPhone and Android
🛡️ FDA Registered 🇺🇸 Ships from USA ⭐ Audiologist-Grade