I bought the electronic bracelets. I'm not really sure the bracelets worked for me very well...altho I have read others who say they work fine.
There were three problems for me. First, when it got hot and I would sweat, I got itchy/rashy under the band. It was definitely uncomfortable.
Second, very unattractive. Big, clunky thing. So if you are going to formal night, or wearing anything nice, it looks awful.
Which leads to my third problem. The minute you take it off, it stops working. So if you don't want to wear it at times, you stand a chance of getting sick during that period.
That being said, if I couldn't take bonine, and it was the band or getting seasick? The band definitely...ugly, itchy or not.
Oh, maybe 4. I got a 1.5 inch white stripe on my wrist with the rest of me tan! LOL Had to keep explaining.