Exceptional load capacity to weight ratio - 75 lb load capacity Cable management - Multiple Aux ports and autoguider port 144 mm diameter worm wheels - Great for heavier loads 270 mm dovetail saddle - Better support for larger optical tubes Heavy duty, 31.5 mm stainless steel counterweight shaft Heavy duty belt-drive system minimizes backlash Includes Celestron's new PWI telescope control software Adjustable EQ head position and integrated handles Compatible with StarSense Technology and WiFi 2 year limited manufacturer's warranty