● caliber: 90mm.

● focal length: 1250mm.

● eyepiece size: 31.7mm.

● stand type: longitude. latitude. pedestal.

● Brightness: 13.8.● limiting magnitude: 11.5 and the like star.

● light-gathering power: 165 times that of the naked eye.

● Resolution: 1.29 seconds.

● highest magnification: 180 times.

● Power: AA batteries 8 (sold separately), 12V AC adapter (sold separately).

● the lowest magnification: 13 times.