Feature: 1. FULL OPTICAL LENS: With a 4MP sensor, this eyepiece can shoot 2K HD photos and videos with brilliant colors and more details retained, which can maximize the restoration of the eye observation effect. 2. SELF CONTAINED SCREEN: No need to disassemble the electronic eyepiece, the eyepiece comes with a 1.5 inch display, so you can have a clear picture when you are not using your cell phone, which is convenient for you to find the planets and the images you need to take. 3. WIRELESS FIDELITY CONNECTION: After the APP connects to the cell phone, you can manage the files shot by the camera. It supports two cell phones to watch the screen at the same time, supports 180° screen flip up and down, and can also beautify the shot video. 4. EASY INSTALLATION: Supports most of the telescopes on the market. You just need to unscrew the active bayonet, snap the device onto the eyepiece of the telescope, and then tighten the active bayonet. 5. LONG LASTING LIFE: The eyepiece is equipped with an extra large battery and can record for about 150 minutes with the display off. Of course, it can be connected to the power cord to realize uninterrupted recording for a long time, and it supports 256G small memory card expansion. 6. MULTI SCENARIO APPLICATIONS: Suitable for remote observation of animals, checking the water surface with your cell phone while fishing, recording concert videos, recording the star sky and many other scenarios. Specification: Item Type: Electronic Eyepiece Material: ABS, Optical Lens Observation Screen Size: 1.5 Inch CMOS: 4MP Video Resolution: 1080P 30fps Photo Resolution: 1920x1080 Video format: MP4 Lens horizontal angle: 5° Wireless Fidelity Connection: Support Memory Expansion: Supports Up To 256G Small Memory Card (Excluded) Battery Information: Li Ion Battery 800mAh (Built In) Mount Type: Active Mount (Compatible With 30MM-49MM Caliber Eyepieces) APP Name: For Vidure. Package List: 1 x Electronic Eyepiece1 x Instruction Manual1 x Charging Cable