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Wonder what kind of weight we're looking at now? While the battery does make the receiver much heavier than it was, but it still is a pleasure to clip on the shirt! And of course, nothing beats the enjoyment of 23 hours battery life given by the 650mAh 14500!
But always remember, watch the volume when listening to IEMs!
I wonder if I should do the same thing to my BTR1K in the mail!