The HD2 features a 50° field of view, which is the widest field of view for any micro-display goggle on the market. The only drawback to that image is that it's so big that it's difficult to get fully in focus; many pilots report seeing blurry edges at the edges of their HD2 screens.
The HD2, like HD3 and like all goggles before it, also uses an LCD chip as its core display technology. So while the image may be bigger, it's less crisp and colorful than the OLED display in the HDO.
For those that don't care about those drawbacks, the HD2, Terminator Edition (T2) may be for you.
Like the HD2, the T2 has an identical, 50° field of view LCD screen. But the T2 has also been updated for the modern pilot. That includes:
The T2 also features special, limited edition branding.
The T2 has a wider field of view than the HDO but uses older imaging technology to create its image. In short, you'll see a slightly bigger image in the T2 that may be blurrier around the edges and that won't be as crisp and responsive as an image out of the HDO.
Warning: Exposing the lens to direct sunlight will result in LCD damage.