- Extra-low Dispersion (ED) glass
- Large view angle and minimum near focus
- Ergonomic center focus wheel
- Memorable right-eye diopter settings and adjustable 3 stage twist-out eye cups
The Endeavor ED II series offers great Vanguard optical technology enhancements including premium ED glass with edge-to-edge clarity that enhances light transmission. The Endeavor ED II series has a redesigned look and feel. This series of optics is nitrogen purged to prevent fogging and completely waterproof and shockproof. The magnesium alloy body offers exceptional strength and stability, and the ergonomic and open-bridge design allows for comfortable use in any situation. Vanguard's premium ED glass stands above the competition with elite color fidelity and elimination of chromatic aberration in the challenging viewing environments. Twist-up eye pieces feature 3 levels to accommodate eyeglass users and a right side locking ocular diopter control provides customized optical tuning.