This 4MP High Clear WiFi Electronic Eyepiece is a universal fit for any optical telescope or microscope, transforming them into powerful cameras for capturing stunning photos and videos of your observations.Features:Universal Compatibility: Fits any optical telescope or microscope with an eyepiece diameter of 28mm-50mm.Simply rotate to connect with your telescope or microscope.Built-in WiFi: Connect to the device's WiFi hotspot for easy browsing and control via your smartphone.High-Quality Imaging: Equipped with a 4MP sensor, it supports up to 4MP static photos and 2K high-definition video recording.Versatile Functions: Features include timed photography and time-lapse video recording.Long Battery Life: The built-in 800mAh lithium battery supports 3 hours of video recording.Expandable Storage: Supports TF cards up to 128GB for ample storage space.Convenient Charging: The Type-C interface allows charging with any phone charger and supports power banks for extended use.Tips:This pair of goggles does not contain a telescope. You only need to screw the eyepiece onto the telescope, adjust the angle of the telescope, and watch on your phone through the APP.How to use:Twist the outer ring of the eyepiece to adjust the size of the inner ring. The inner ring can be adjusted to 30-49mm in diameter. The inner ring of the eyepiece can be adjusted according to the diameter of the telescope. Put the WiFi eyepiece on the telescope, tighten the inner ring to fix the telescope, turn on the WiFi connection, and then watch it on the mobile phone APPSpecifications:CMOS/SENSOR pixels: 4 millionRecording resolution: 2K/1080PRecording frame rate: 30 frames 1080/25 frames 2KPhoto resolution: 1920X1080/2304X1296Video format: MP4Lens horizontal angle: 5Recording file time: 1/3/5WIFI point-to-point: SupportedMaximum supported TF card: 128GBBattery (lithium battery): 800 mAhRecording time (WIFI) turned on: 130 minutesLanguage: Supports all languages ??and mobile phone synchronizationColor box size: 93x93x63mmFull set weight: 140gPackage List:1 x 4MP WiFi Electronic Eyepiece1 x User Manual