AmScope 40x-1000x Student Compound Microscope - LED Cordless Cordless LED Microscope with 360&deg; Rotatable Monocular Head Offering Five Widefield Magnification Powers up to 1000X Sturdy Metal Framework with Disc Diaphragm Separate Coarse &amp; Fine Focus with Tension Control Wall-Power Adapter/Recharger and Three Rechargeable Batteries Included