Callen rounds out a team that includes engineering and marketing personnel with more that 150 years of combined experience in the shooting, hunting, and optical design industries.

• 该系列包括双筒望远镜和单筒望远镜，包括美国设计的高性能的步枪望远镜瞄准器，适合徒步旅行者、野鸟研究者、猎人及其它户外运动爱好者。