Turn it on under the water
937400
It works really well, cleans up the mess my kids make in the pool. For the price, overall a great vac
2754565
I like it so far like everyone said you need to waterproof it. The only problem that I ran into is that it those not work when the temperature drops below 30o .
2628543
Great little project, you can make it sound somewhat like a cricket with some fine tuning. It's fun to hide in a room and drive someone nuts when they can't find it after they turn the light back on
4529394
Don't forget to turn it on, in the dark, and then it will work!
2723439
it works great.  I read some reviews before. These need a steadt 12 volts.  I have installed them throughout my boat and hooked up directly to a 12 vold battery.  Perfect the place has twice the light with a persentage of the power draw.  I now leave the lights on when we leave the boat, it makes it easier to find the boat is a strange ancorage.  good stuff
286138
Water is very cold.  The only thing that I wish that it had was a light (where the water comes out) to show when your cup is full.
634598
Turn it on an hour before you go to bed on a cold night its so wonderful it helps tired mussels and achy bones. The duel control is great to you can set it at what ever you want or shut it off if you get to hot and keep the other side on,cannot feel the coils at all,worth the money.
3373882
I did not expect so much about this player, but works perfectly under the water. I use it for swimming, the transference rate is slow but works underwater! and change my boring long training sessions with music! :)
1008534
Works great, but needs to be on tight. The various modes is what sold me on it. My dog swims everyday in a pond or the pool and it has stayed true to it's waterproofing.
4453919
This is a great little heater. True to its word, it is submersible beyond a shadow of a doubt. Accurate temperature.
4507396
Perfect for our 16ft above ground pool. Lights it up, making it great for night time swimming.
4639389
A great item for decoration, everyone is surpised when they open the water and see the light. Easy to install.
4945038
Stopped working after it was accidentally immersed in water.  It ought to be waterproof.  Seller refunded money
7359
Really great little boat to play with once you get it going.  Mine would not work out of the box, I had to bypass the so called safety circuit for the boat after reading about other reviews and searching the Internet. The safety circuit is supposed to keep it from running when out of the water but really didn't matter to me if I by passed the safety circuit cause I ain't gonna hit the throttle with it out of the water anyway. Transmitter would be turned off first anyway with a little common sense. But you got to get some spare batteries cause it is fun to drive on the pond. Thanks!!
1515397
Works well, be nice if it was waterproof and you could swim with it on.
4968053
I just love watching this little boat bob along in the currents.  Best of all, it let's me know when it's finally warm enough to go swimming!
3761649
I just received the light so it is really hard to give a detailed review.  It is small and light weight but appears to be powerful enough when I turn it on in the dark bathroom.  My plan is to hang it from the support of my Bimini top on my pontoon boat for night time use.  It has two brightness settings and a red light that is really cool and should create a great party atmosphere on my boat in the evenings. Also, I am hoping that the red light will not affect my night vision when it comes time to drive back to my dock at the end of the evening.  With the "Gen 2", the batteries are included and also comes with a recharging cable.