Just received it so can't say how long it will last. Also, I ordered this one with the main criteria for next day delivery. But I was pleasantly surprised at how beautiful it is. Looks solid, all open parts are well finished. The button is usually flush with the case, you need to push it in well with your fingertip before it will work. The chances of you accidentally doing this are minimal. The effort required is fairly light, so holding the button down for a while isn't a problem. (In use, I'd have to hold it down for about a minute, but I NEEDED to have an instant switch, so no way to turn it on and get distracted). A pleasantly tactile click can be heard when the switch is pressed. The light ring is very beautiful. I only use it at 8V so it's not as bright as at 12V nominal. Haven't tried it outside yet. It may not be as noticeable in bright sunlight. However, I don't care how I use it. In summary, I like it very much. Nicer than I expected. The price is reasonable too.