SarBlue Mak 70 Telescope Compact & Powerful Maksutov-Cassegrain optical design offers 1000mm focal length folded in 210mm length tube. 70mm aperture allows more light entering the telescope for higher resolution. It's a great camping telescope, easy to pack in its box to take it for travel. Perfect for a night under the stars in the desert. Great first telescope for kids too as it is easy to use. In factory box and like new condition.