Features:  Functions: day and night vision, taking photos, recording, and replaying, etc.  Playback on device, monitor, or PC.  Infrared imaging, with a higher definition at low light.  With USB 2.0 port, video output, and power port, more practical.  Work time: about one hour while opening the auxiliary light, 2.5 hours while not opening it.  Built-in adjustable infrared illuminator.  The view distance ( low light ): approx. 200m / 7874 inches.  The view distance ( full dark ): infinity.  It is equipped with external power.  High capacity chargeable lithium-ion battery, 750mAh, 3.7V (please ensure the battery would be charged for 10 hours in the first time to make it work best).  Equipped with a portable bag for storing, easy to carry.  Quick to set up and easy operation.  High-quality robust construction.    Specifications:  For: Beach, Bird Watching, Boating/ Yachting, Horse Racing, Hunting, Outdoor Activities, Sports, Theater, Travel;  Prism System and Material: ABS;  Body Coated with Rubber: Yes;  Objective Lens (mm): 40mm;  Field of View: 200m;  Field Angle(degree): 7.6 degrees;  Exit Pupil Distance: 20mm;  Features: Adjustable Focus, Anti-slip, Digital Camera Design, Night Vision;  Package Weight: 0.809 kg;  Product Size (L x W x H): 20 x 8.6 x 5.6 cm / 7.87 x 3.39 x 2.2 inches;     Package Included:  1 x Infrared Digital Video Night Vision Telescope,  1 x AV Video Cable,  1 x USB Cable,  1 x Storage Bag,  1 x Charger,  1 x English User Manual,  1 x Wrist Strap,  1 x Lens Cloth