No on and off buttons, totally silent until you turn on your Attx receiver on, then their unique capability is revealed. Until you use them, you don't know how special they really are. No twitchy beeps when the heavens descend wind and rain upon you. They are no bigger than a matchbox and half the size of a neville, and 100% waterproof. A 'must have' bit of kit, no matter the size of lake or whatever the weather, they were 100% reliable. Awesome.

I have had the opportunity to first try the ATTx V2 when it was launched and I have adopted it straight away. I have them into the water after a sudden rise of the water in Lac du Temple and they were still working, I did not even take the time to dry them, just left them on the sticks to fish for another week. Speaking of the ATTs, I really love the classy and simple look of them. ATTs working with the ATTx will be for me the optimum in terms of reliability, simplicity and efficiency. You guys at ATT did a tremendous job, keep on feeding us with some other beauties !