Orion 7395 AccuFocus Electronic Telescope Focuser Motorized electronic telescope focuser makes achieving sharp focus easy Use the pushbutton hand controller for smooth, precise focus adjustments without vibration Choose speeds from coarse to very fine with the adjustable speed control knob DC motor installs easily and works with many Orion telescopes Also includes bracket, hardware, and coil cable. Powered by one 9-volt battery (not included)