This Amphibico 7 x 11" white balance color chart is made of aluminum. The card will allow you to calibrate your camera for true color balance when shooting video underwater. White balance should be checked whenever you change depth.
Only certain camcorders and housings allow for manual white balance. The following Amphibico housings support manual white balance: FX1, VH2000, VH2100, PD150, PD170, Navigator 900, and Dive Buddy PLUS 950.