Digital zoom: 1x, 2x, 4x and 6x. Optical lens size: 22.5mm. Optical lens: IP66 waterproof and working temperature: -40 to +50? Blue Lens Cover: Night Vision Booster. Field of view: 25.5×14.5°. Eyepiece adjustment range: +2-5d. Low light observation distance: 200m/656ft/219yards. Darkness observation distance: 100m. Lcos screen size: 0.38. LCOS display setting: 19201080p. CMOS sensor Size: 1/2″ (large size than normal 1/3″ or 1/2.7). Video resolution: 19201080p: 30fps. Level Go: 1, 2, 3. Battery type: rechargeable battery (186,50) 1pcs (included). Night working hours (app and lamp on): 3 hours. Night working hours (wifi on): 5 hours. Italian, Simple Chinese, Traditional Chinese, Russian, Japanese, English, French, Spanish, Portuguese and German. 1 black lens cover. Ballistic TAC High Cut Helmets Specification: Ballistic Level : IIIA Certified NIJ 10106 Material : Multi layer Para Aramid / Kevlar Tested to defeat. 40 S&W FMJ rounds Head circumference size: 59-62cm Size: L Dimensions: Shell Thickness 8.0 ± 0.8mm. 1xFast helmet (Bulletproof Material, Aramid).