Yes, the selfie stick works under water. Please note that the stick and especially the screw, including the nut, must be rinsed with clear water after use and then rubbed dry. The stick is less of a problem than the screw and nut, which corroded and rusted in my case. I would like to mention that I was in seawater with the stick and didn't clean and care for it immediately after use, so it's a bit my own fault ;-) Overall, I give the product a 3.0 out of 5.0. I think it is good that it offers many mounting options and the ones used (stick, bike holder, head and chest holder) also hold the camera very well. What I find less good is that the metal parts rust and the seams on the strap of the chest holder have come undone after a few uses. For hardcore users, I would recommend a higher quality product. For occasional users, it is definitely a suitable choice. Hope to have helped.
