Warm Tips: 1. To turn on the device, please press and hold the power button for 3 seconds. If the unit doesn't turn on after that, please check whether the batteries full charge. 2. To turn on the night vision function, please simply press the IR+ button or increase the IR brightness level gradually, the image in the screen will turn black and white. 3. Keeping the IR on will also drain the battery. If battery power is insufficient, the IR brightness level will decrease automatically accordingly. 4. The night vision device doesn't work through windows because IR beams will reflect. 5. Rotate the lens to manually focus the target to be clearer. 6. You can use them during the daytime too without any problems. Specifications: Item name: Monocular Night vision Color: Black Still image size: 10 MP / 8 MP / 5 MP/3MP/VGA Video size: 1088x1088@30FPS/1280*720@30FPS Aperture: F 1.2 f=25mm Lens: FOV=10°, aperture 24mm Display: Inner screen 1.5inch (240 x 240) high-definition TFT Digital zoom: 4x times Storage medium: TF card, maximum support 128 GB Observation distance in all black: 250-300 m Low light or daytime observation distance: 3 meters to unlimitedness Infrared light: 850 nm Strong infrared spotlight, 7-speed infrared adjustment. USB interface: TYPE-C 2.0 Power supply: With 3800mAh internal battery Operating temperature: -20 to +60 Storage temperature: -30 to +70. Product size: About 149 x 63 x 49 mm/6.49 x 3.34 x 2.95 inch Product weight: About 193g Selling Point: 100% Clearly Visible in the Dark - The Upgraded Night Vision Monocular Telescope features an 850nm infrared illuminator and a full optical system that allows you to see animals or plants clearly in 100% dark or dim ambient light. 3 modes: Take a photo, Record video (no sound), Playback, you can capture HD photos and videos with its excellent optical clarity during the day, in low light, or at night. The 3x fixed optical full multi-coated 25mm objective and 5x digital zoom easily adjust to the optimal focal length based on the actual observation distance zoom, providing a sharper view of detail and a better price/performance ratio. High-sensitivity CMOS sensor for Full HD images and videos (4032x2520 images and 1920x1080@30FPS video); 984 FT extra-long viewing angle - The built-in 850nm IR LED illuminator gives you a clear view of targets up to 984 FT away in complete darkness. 7 levels of adjustable IR brightness for optimal visibility at night. Adjust the higher the infrared, the sharper the image. Highly rugged quality and portability - The night vision monocular telescope is ergonomically designed to help you focus on your target quickly and accurately with one hand. The sturdy frame keeps the night vision goggles stable for long periods of time without slipping off your hands. Small and lightweight, can be easily put into the pocket, easy to carry; Supports up to 128GB SD cards - no more worrying about running out of storage! Be the perfect friend for exploring the darkness! It can be used for observation, reconnaissance, security surveillance, whether indoors or outdoors or just beware of intruders when camping. Package List: 1 * Night Vision Device 1 * USB Cable 1 * User Manual