Zoomscope is a portable microscope with illuminating torch, zoom from 20 to 40 magnification. Focus is obtained by rotating the microscope housing on the underlying funnel. Battery for the Zoomscope light is included. For replacement use LR1/N 1.5v battery. Equivalent to Energiser E90. Technical: Optics : 4 elements Zoom : from 20 to 40 The portability allows the microscope to be used outside as well as a small bench top microscope. Colours will vary