---
product_id: 580534403
title: "Open 4.0 Dome Medium (0.35 inch=9mm) 10 Domes, Hearing Aid Domes Compatible with Phonak Audeo Marvel Paradise Lumity Accessories -1 Pack/10 Domes Total"
brand: "otto tech"
price: "£10.36"
currency: GBP
in_stock: true
reviews_count: 8
category: "Otto Tech"
url: https://www.desertcart.co.uk/products/580534403-open-4-0-dome-medium-0-35-inch-9mm-10
store_origin: GB
region: United Kingdom
---

# Ø9mm Medium Dome Size Pack of 10 Durable Domes Open Vented for Natural Sound Open 4.0 Dome Medium (0.35 inch=9mm) 10 Domes, Hearing Aid Domes Compatible with Phonak Audeo Marvel Paradise Lumity Accessories -1 Pack/10 Domes Total

**Brand:** otto tech
**Price:** £10.36
**Availability:** ✅ In Stock

## Summary

> 🎧 Hear every moment, don’t miss a beat!

## Quick Answers

- **What is this?** Open 4.0 Dome Medium (0.35 inch=9mm) 10 Domes, Hearing Aid Domes Compatible with Phonak Audeo Marvel Paradise Lumity Accessories -1 Pack/10 Domes Total by otto tech
- **How much does it cost?** £10.36 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/580534403-open-4-0-dome-medium-0-35-inch-9mm-10)

## Best For

- otto tech enthusiasts

## Why This Product

- Trusted otto tech brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Crystal Clear Sound:** Enhances speech clarity while preserving ambient awareness
- • **Seamless Compatibility:** Works flawlessly with Phonak Audeo Marvel, Paradise, Lumity & more
- • **Comfort Meets Performance:** Medium size with open vent design for all-day comfort and natural airflow
- • **Hypoallergenic & Hygienic:** Soft silicone material safe for sensitive skin and easy to clean
- • **Reliable Replacement Pack:** 10 domes per pack to keep your hearing aids performing at their best

## Overview

Open 4.0 Medium Domes (Ø9mm) are premium replacement hearing aid domes compatible with leading brands like Phonak and Unitron. Designed with an open vent for natural sound transparency and made from hypoallergenic silicone, these domes ensure comfort, durability, and enhanced audio clarity for mild to moderate hearing loss users.

## Description

Buy Open 4.0 Dome Medium (0.35 inch=9mm) 10 Domes, Hearing Aid Domes Compatible with Phonak Audeo Marvel Paradise Lumity Accessories -1 Pack/10 Domes Total on desertcart.com ✓ FREE SHIPPING on qualified orders

Review: Works great - They fit well
Review: Came quickly, looked like original part - Quick delivery, good product. There is not much difference between the small and medium sizes. Measure carefully.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B0CK5NFTV2 |
| Best Sellers Rank | #27,862 in Health & Household ( See Top 100 in Health & Household ) #4 in Hearing Aid Domes |
| Customer Reviews | 4.7 4.7 out of 5 stars (512) |
| Date First Available  | September 30, 2023 |
| Item model number  | B0CK5NFTV2 |
| Manufacturer  | Sonova |
| Product Dimensions  | 1.93 x 1.73 x 0.75 inches; 0.63 ounces |

## Images

![Open 4.0 Dome Medium (0.35 inch=9mm) 10 Domes, Hearing Aid Domes Compatible with Phonak Audeo Marvel Paradise Lumity Accessories -1 Pack/10 Domes Total - Image 1](https://m.media-amazon.com/images/I/816U3fbAmdL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great
*by R***R on January 17, 2026*

They fit well

### ⭐⭐⭐⭐⭐ Came quickly, looked like original part
*by A***L on February 26, 2026*

Quick delivery, good product. There is not much difference between the small and medium sizes. Measure carefully.

### ⭐⭐⭐⭐⭐ Good value
*by M***. on December 17, 2025*

Fits several different hearing aids!

## Frequently Bought Together

- Phonak Open 4.0 Dome Medium (0.35 inch=9mm) 10 Domes, Genuine OEM Switzerland Replacement by Sonova, Hearing Aid Domes for Phonak Audeo Marvel Paradise Lumity Accessories -1 Pack/10 Domes Total
- Genuine Phonak Cerustop Wax Guards Color Gray- 4 Packs (32 Filters)

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**Shop now:** [https://www.desertcart.co.uk/products/580534403-open-4-0-dome-medium-0-35-inch-9mm-10](https://www.desertcart.co.uk/products/580534403-open-4-0-dome-medium-0-35-inch-9mm-10)

---

*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-25*