Built with a military-spec aluminum casing and an eye-pleasing OLED display, the NiTek  wrist-mount computer comes standard as a seven-gas trimix computer (8 percent to 99 percent O2, 0 percent to 92percent He). It uses the Buhlman ZLH 16 algorithm and offers three preset gradient factors: 30/75 (default) and 40/100 for deep or shallow spots, plus 75/95 for divers trained in custom gradients. Depth rated to 492 feet, the NiTek Q offers many options, like adding a digital compass or a CCR mode with fixed PO 2 set points. It is powered by a lithium rechargeable battery.