Feature 1 Mobile Phone System: Electronic eyepiece USB C telescope electronic eyepiece for Android phones. Let your for Android phone take you on a guided night sky travel. 2 Simple Operation: No telescope experience is required to use the Electronic Eyepiece. Positioning is possible by simply adjusting the telescope, suitable for both monoculars and binoculars. 3 APP Control: The telescope eyepiece camera includes an app to easily explore the world nature through mobile phone operation. You can take some wonderful photos to share with your friends. The app is free to download and works for Android devices. 4 Easy to Install and Use: Digital electronic eyepiece camera quickly install a telescope digital eyepiece with a 43mm eyepiece without additional tools. 5 Practical Tool: The telescope electronic eyepiece helps you see birds and wildlife clearly, making it more fun for outdoor adventurers.Item Type: Telescope Electronic EyepieceMaterial: ABSSize: Approx. 45x28mm / 1.77x1.10in Eyepiece Diameter: Approx. 43mm/1.69inColor: BlackInterface: USB CResolution: 1600x1200Pixel: 200W Package List1 x Telescope Electronic Eyepiece Note1. To download the APP, please select for Android(China) for users in China and for Android(for Google) for users outside China.2. Please allow some error in manual measurement.