Blamey Saunders SIE speaker
Speaker assemblies for Opus and SIE hearing aids. These are spare/replacement parts.
There are five Opus and SIE speaker-assembly sizes: 0, 1, 2, 3, and 4. If you are replacing an existing speaker, you can find the size labelled in small lettering on the red/blue sound tip of your existing speaker.
If you do not know your size, you can print out these instructions: Tube length guide (PDF).