1. Fun and useful USB Eyepiece Camera allows you to transmit the real-time view through your telescope to a laptop or PC, and capture great digital and images 2. Share the view of bright planets, the Moon, and terrestrial targets through your telescope with friends, family, and astronomy enthusiasts. An affordable introduction to the rewarding hobby of astrophotography. Great for lunar and planetary - not suitable for deep space imaging. Very versatile - Fits into any 1.25-Inch telescope focuser or 1.25-Inch step-down adapter 3. for XP/Vista/7/8/8.1 Operating Systems 4. This is a high performance web digital product guaranteed by our technology and quality. It is a plug and for play product for real-time data transmission to PC via USB port. It has a high resolution and fast transmission rate, it is nice-looking and easy to carry with you it just brings intimate and convenient life experience with your distant friends and families! System requirements for PC or compatible PC or laptop with USB port Pentium 200 or higher CPU for 98SE/ME/2000/for XP/Vista/7/8/8.1/10 Operating Systems CD-rom Drive in for case computer is not equipped with software 32MB or higher memory Support DirectX VGA card CMOS Chip Type: Color CMOS for image sensor 3 Strong led for better picture in dark Video format: 24 bit RGB Interface: USB Lens: 1.25"/31.7mm Video: 640x480 pixels up to 15 frame/sec(VGA) Frame rate: 320x240 up to 30 frame/sec() Sensor size: 4.86mm x 3.64mm S ratio: less than 45dB Dynamic range: less than 72dB for Focus range: 5cm - for Automatic white background balance Automatic color compensate Dynamic for image Manual for focus Supports system: win98/Me/2000/XP/Vista/7/8/8.1/10 colour: As Shown material: ABS Package Contents: 1 * USB eyepiece camera Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.