Features  & 9679; Helmet mountable for hands-free usage & 9679; Fully multi-coated lenses decrease glare and improve light transmission & 9679; Comes with protective carrying case, wrist strap, and lens cover for travel and prolonged use & 9679; Integrated on/off and IR activation LED indicators & 9679; Ergonomic, simple,easy to operate controls & 9679; Compact,rugged design  Specification  Lens magnification (x)& 65306;1 Objective lens diameter(mm)& 65306;24 Lens system& 65306;30mmF/1.1 FOV at distance 100m/110yards(m)& 65306;25/60 Field of view(deg)& 65306;30 Focus range(m)& 65306;1.0 to infinity Exit pupil diameter(mm)& 65306;6 Eyepiece Diopter adjustment(D)& 65306;+4,-4 Eye relief(mm)& 65306;15 Power supply(v)& 65306;CR-123 3V battery (one) Battery life IR on(hour)& 65306;Up to 20 Battery life IR off(hour)& 65306;Up to 60 IR power(mw)& 65306;25≤ IR wavelength(nm& 65306;850 IR effective distance(m)& 65306;25 Detection range(m)& 65306;150/100 IP standard of water-resistence& 65306;IPX4 Humidity(%)& 65306;93 Operating temperature(& 8451;)& 65306;-30°to+45° Storage temperature(& 8451;)& 65306;0°to+60° Weight(g)& 65306;320 Dimensions(mm)& 65306;144×77×61                About our company:  Zhejiang ZIYOUHU Technology Co. Ltd. Is a company specializing in the production and processing of products such as night vision devices, telescopes, and rangefinders. It has a complete and scientific quality management system. Our integrity, strength and product quality have been recognized by the industry. Welcome friends from all walks of life to visit, guide and discuss business.