1. Initial Insertion: Gently Push Until Fitted
First, gently insert the earplug into the outer ear canal, ensuring the tip touches the inner wall and fits naturally without slipping. Do not force it in; this depth is sufficient for most people's needs.
2. Judging the Depth
Too Deep: You may feel a stretching or painful sensation in your ear canal, or even dizziness upon touching the eardrum. Gently pull it out 1-2 millimeters until the pain subsides.
Too Shallow: The earplug only blocks the entrance to the outer ear canal. It may slip out easily with slight head movements and allow external noise to leak in. Push it in a little more until it fits snugly and doesn't easily fall out.
3. Adjustments for Special Cases
If your ear canal is small, insert a smaller size earplug. If your ear canal is large, use a larger size earplug. After fitting, a slight insertion is sufficient for a tight seal; do not force it in.
4. Final Verification
After adjusting the depth, perform a simple occlusion test: block the opening of the chest piece. If you cannot hear any obvious sound leakage and do not experience any discomfort or pain in your ears, then this depth is the correct depth for you.
