Specification NameElectronic eyepiece camera Material: aluminum alloy Size: 9*6*5.5cm/3.54*2.36*2.17 inches Battery type: lithium battery (built-in) Battery capacity: 850mAh Charging interface: C type Screen size: 3 inches Digital zoom: 5 levels All-black observation distance: 0.5m-800m Eyepiece aperture: 22mm-46mm Resolution: 4K DESCRIPTION 4K RECORDING: The telescope camera eyepiece ensures clear image capture. It enhances low-light clarity through dark-light compensation, providing a clear, dynamic viewing experience. REAL-TIME VIEWING: The electronic eyepiece camera is equipped with a 3-inch color display that allows for better adjustment and framing so you can monitor the captured footage in real time. EASY TO MOUNT: Easily mount the camera on optical telescopes and microscopes with 22mm-46mm eyepieces, transforming your device into a camera that captures stunning images and video. Memory Card Support (Memory Card Not Included): With up to 128GB of memory card storage to support real-time recording of footage, the telescope camera ensures a long-lasting record of your observations. Portable and Lightweight: The eyepiece camera is extremely lightweight and compact. Slip the eyepiece into your pocket or bag and take it with you for astrophotography. How to Use. Install on the telescope, turn on to use Product List 1 * Electronic eyepiece camera 1 * Instruction manual 1 *Charging cable