FEATURES

DESCRIPTIONS

Retention Locks for Phonak Marvel & Paradise receiver wires. Ideal for keeping your hearing aid securely in place – available in standard, medium and power. Receiver Retention Key Notes: There are 3 different receiver powers. S- Standard Power, M-Medium power, P- Power, Therefore, there are 3 different size options for retention locks. S, M and P which can also be referred to as Small (S), Medium (M) or Power (P). Look at the metal part of the receiver wire. There will be a stamp in red or blue showing a number and then a letter. Examples: 2S, 2M, 3P. The letter is the power of the receiver, which you would want to match the retention lock to.