Dog Training Collar with Waterproof Rechargeable Remote

This collar does everything I want it to do with regard to controlling my young Irish Setter. The only problem I have found is that, as we run our dogs on the beach, the nozzle can become blocked with sand, which I cannot dislodge, so that only the bleeping noise remains in use. I find the collar will probably last for a year, but then a new one will need to be bought, as I am about to do!