AmScope 120X-240X-300X-480X-600X-1200X Educational Metal Arm Kids Compound Microscope Kit + Book 40-piece beginner biological microscope kit offers 120X, 240X, 300X, 480X, 600X and 1200X magnifications Durable metal arm with stage, clips and rack and pinion focusing Built-in LED electrical illumination and reflecting mirror for natural illumination Built-in rotating color filter wheel and power indicator on rotating turret The book - The World of The Microscope and two AA batteries included