The X3 Electric Device Tablet Holder is a rectangular, black holder made of high-quality plastic material that is waterproof and designed for smartphones and tablets. It features adjustable options, extra storage, and protective capabilities. This device is compatible with automobiles, has dimensions of 11.81 x 9.25 x 6.89 inches, and can be bolt-mounted. The X3 GPS Mount Storage Box, model number KMFTVDB019, ensures secure placement and easy access to your electronic devices while on the go.