Yeah I have them, bought them from Specsavers. Rechargeable so no replacing batteries, not cheap mind. They are good with a bluetooth app so you can adjust to suit but I don't like wearing them if I'm honest. Watching TV is much better with them on and hearing small bird song. When they tested my hearing low sounds was still good but high pitch stuff like small birds was gone. If I'm ferreting or just out mooching I don't usually wear them.
I've had this ringing in my ears since my mate fired a 12 bore right next to my ears out shooting Foxes about 50 years ago. It was pubs with that bab