Feature: 1. FULL OPTICAL LENS: The electronic eyepiece adopts a 4MP pixels sensor, which can shoot 2K HD photos and videos with brilliant colors and more details retained, which can restore the observation effect with unaided eyes to the maximum extent. 2. WIFI WIRELESS CONNECTION: After connecting to your phone using APP, you can manage the files shot by the camera, support two phones to watch the picture at the same time, support up and down 180 degree picture flip, and also beautify the video shot. 3. EASY TO INSTALL: The electronic eyepiece supports most of the telescopes on the market, you just need to unscrew the movable bayonet, snap the device to the eyepiece of the telescope, and then tighten the movable bayonet. 4. LONG LASTING BATTERY LIFE: The eyepiece is equipped with a large battery, which can record about 130 minutes under standard conditions, of course, it can be connected to the power cord to realize long time recording, and it supports 128G memory card expansion. 5. MULTI SCENARIO APPLICATION: With the electronic eyepiece mounted on the telescope, you can realize a variety of scenarios such as remote observation of animals, using your phone to check the water surface when fishing, recording concert videos, recording the star sky and so on. Specification: Item Type: 2K WiFi Electronic Eyepiece Material: ABS, Optical Lens CMOS Pixels: 4MP Video Resolution: 2K 25fps, 1080P 30fps Photo Resolution: 1920x1080, 2304x1296 Video Format: MP4 Lens Horizontal Angle: 5° WiFi Connection: Support Memory Expansion: Support up to 128G Memory Card (Not Included) Battery Information: Lithium Ion Battery 800mAh Capacity (Shipped with Built In Battery) Mount Type: Movable Mount (Compatible with 30mm-49mm/1.18-1.93in Caliber Eyepieces) App Name: for Viidure Dashcam Viewer. Package List: 1 x Eyepiece 1 x Instruction Manual 1 x Charging Cable