These Panasonic headphones were purchased as a gift some time ago but were returned to me as not working consistently. I have now tried them myself and followed the instruction regarding tuning the signal etc but the transmitter seems to just stop working leaving a very high static noise in the ears. I have tried to return these and get a refund but the seller seems to be looking for a way not to refund on the grounds that it was sent over 28 days ago.
I will say that the headphones are very comfortable but would not recommend them as fit for purpose.
This book is an excellent read but being a working horologist it was interesting to me as I have known of his work all my life. I think this book would be interesting to anybody with a mechanical interest and probably an inspiration to many.