What are the deninsions accoss the widest part (top) mine is 9 mm's? I am trying to figure out the size I need (small, medium or large)?

small open approximately 5 mm medium open approx 7 mm large open appox 10 mm

Contact the Costco Hearing Center for the recommended dome for the 10.0

Phonak Unitron And Hansaton 4 0 Small Open Domes Pack

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Description

🎧 Elevate your hearing game with the ultimate small open domes — comfort, clarity, and compatibility in one sleek pack!

VALUE PACK ADVANTAGE - 10 domes per pack means you’re always prepared — never compromise on your hearing experience.
COMFORT MEETS CLARITY - Small open design ensures natural sound flow while maintaining discreet comfort all day long.
DURABLE SILICONE BUILD - Premium skin-colored silicone offers a soft, secure fit that lasts, blending invisibly with your style.
SEAMLESS COMPATIBILITY - Works flawlessly with Phonak Marvel, Paradise, Lumity, Infinio, Unitron & Kirkland receivers — one dome to rule them all.
HYGIENIC EASY MAINTENANCE - Simple rinse-and-dry cleaning keeps your domes fresh and ready, minimizing downtime and maximizing performance.

Phonak, Unitron & Hansaton 4.0 Small Open Domes come in a convenient 10-pack designed for behind-the-ear hearing aids. Made from durable silicone, these skin-colored domes provide a comfortable, natural listening experience with excellent sound isolation. Compatible with multiple top hearing aid brands including Phonak Marvel and Unitron, they are easy to clean and maintain, ensuring long-lasting performance and hygiene.

Specifications

ASIN	B07M95T5DR
Battery Cell Composition	Polymer
Battery Description	Lithium-Polymer
Best Sellers Rank	30,794 in Health & Personal Care ( See Top 100 in Health & Personal Care ) 33 in Hearing Aid Domes
Brand	Phonak
Brand Name	Phonak
Colour	skin-coloured
Compatible Devices	Phonak Marvel hearing aids
Control Type	Button Control
Customer Reviews	4.5 out of 5 stars 25 Reviews
Fit Type	Behind-the-Ear
Global Trade Identification Number	07613275690390
Headphone Folding Features	Behind-The-Ear
Item Weight	0.1 Ounces
Manufacturer	Phonak
Material	Silicone
Model Name	E104
Model Number	E104
Model name	E104
Noise Control	Sound Isolation
Number of Items	10
Outer Material	Silicone
Part Number	GM-100A
Power Source	Battery Powered
Power source	Battery Powered
Product Style	Behind-The-Ear
Rechargeable Batteries Included?	Yes
Recommended Uses For Product	For use with Phonak Marvel hearing aids
Software Update Supported to Date	unknown
Special Features	Rechargeable
Strap Type	Over the ear
Style	Behind-The-Ear
Unit Count	10.0 count

Reviews

M**Y

Perfect size

Love these, much better for staying in my ear. Seem to collect much less wax as well

21.03.2026

W**.

as described.

Okay and fits well

6.04.2026

O**R

Great

Perfect

27.12.2025

I**N

Hearing aid plugs

Heating aid rubber seals, stops ear wax from blocking the sound. works well, and cheaper then Boots chemist ones

6.05.2026

A**R

Excellent product

Excellent product , it came very quickly, very well packaged .

23.02.2025

M**N

Small is only 6mm diameter

These are really small. Amazon you have failed to include 6mm measurement. Specification only has weight !

11.09.2026

R**E

Perfect sizing

Just right for my hearing aid.

7.02.2025

T**S

Very good

Very Good

22.02.2025

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