Built on the TG-7 platform, the new TB-640 Vulkan takes thermal bioculars to a new level with a 640 x 480 resolution thermal core and a 75mm germanium objective lens. Enhancing the image even further, the crispness is immediately noticeable thanks to the dual 800×600 OLED high resolution displays. The video can be transmitted to an external monitor through the video output jack and the display settings have the options of choosing between black-hot, white-hot and sepia polarity. Digital zoom can be toggled between 1x, 2x, and 4x. The unit operates on (3) 3v CR123 batteries or via external AC power with the supplied cable. Made with the same rugged construction as the TG-7, the TB-640 also incorporates simple to use controls.