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Mine was molded to fit inside the ear canal so it couldn't be seen. there were no batteries or electronic device with it. It had a small hole it. Can't tell you much more than that. I still use them for loud events, but for officiating I'm just not comfortable using them.
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Mine were molded as well - no electronics involved either. I wear them a lot depending what my teaching assignment is. If in front of a large group band for example - definately wear them all day. This year I am doing choral and don't use them as much. Being that I had to wear them all the time when I got them - I became very comfortable with them quickly.
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When I want your opinion - I'll give it to you!
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Here is a whistle you might want to try. Best Whistle
I will get one before soccer season starts. I won't give it a try in Basketball because our local association specifies the use of the Fox 40 |
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