Night Vision Sight NVG 3X28 Infrared Night Vision Monocular. Battery, Helmet and Mount NOT included. Size: 14.5X6.3X6.4CM. Minimum observation distance: 0.8mm. Built in power: 2 x AA battery (not include). Battery endurance: 1.5/2.5h (1R ON/1R OFF). To North America : 10 to 15 days. To South America : 20 to 45 days. To West Europe : 12 to 18 days. To East Europe : 20 to 45 days. To Asia : 7 to 15 days. Custom / post office / festival. First but don't use the feedback system to inform us such matters.