Specifications: Monocular Eyepiece: WF10× (number of fields of view 18) Objective lens: Achromat 4×, 10×, S40× Lens barrel type: 360° rotating head, tilt angle 45° Focus adjustment: rack and pinion type Stage: 115×120mm Condenser: With iris diaphragm and filter holder, numerical aperture 0.65 Lighting: Transparent/white LED light (light intensity adjustable) Power supply: 4 AA rechargeable batteries (built-in) Total magnification: 40×~400×