Its yoke-style retention system stabilizes the helmet and affords an optimum fit at the chin and nape. Advanced ear cups that can be rotated for enhanced fit and sound attenuation, reduce the transmitted force while screening out excessive noise levels that can impair hearing.
The unit’s lightweight, dual visor system features a clear visor and a neutral gray (sunshade) visor with a mounting platform for the V-1 mount for ANVIS-6 Night Vision Goggles. For particularly demanding mission requirements, laser visors, high contrast visors and gradient visors are available as upgrades from Gentex for aircrew personnel to improve visual acuity day, night or inclement weather conditions. All Gentex visors are made of polycarbonate and meet all performance requirements of MIL-V-43511 and have an abrasion-resistant coating on the front and back surfaces in accordance with MIL-C-83409.
And to complete the helmet system, the optional SPH-4®B communications system incorporates a wire boom-mounted M-87A/AIC adjustable or flex boom microphone, a microphone cord, EV986 dual earphones, and optional 36 inch -coil cord with a U-174/U C.I.P connector plug and U-172/U microphone jack for radio communications. The commercial versions of the SPH-4®B are available with a wide range of accessories that can meet your needs.