This cordless LED monocular biological microscope is designed for both indoor and outdoor applications. With the versatility of a rechargeable battery operated system and an adjustable rheostat light intensity control you can use this model as either a portable field-use scope on battery power or plug it into a wall outlet for traditional classroom use with the AC adapter/recharger. This microscope offers sharp clear images cool illumination three magnification levels (40X 100X & 400X) and freedom from cords. It comes with a 45° inclined 360° rotatable monocular head coarse & fine focusing intensity-adjustable LED illuminating system three rechargeable AA batteries and an AC adapter/recharger. This durable and reliable microscope is a perfect instrument for students and hobbyists to learn science. Features : A great rechargeable cordless LED monocular biological microscope Versatile rechargeable battery operated system AC adapter/recharger for wall outlet for traditional power supply Adjustable rheostat light intensity control Great for both indoor and outdoor applications Easy to be taken out to field sites Powered by either direct wall power supply or rechargeable LED system Intensity-adjustable LED cool illumination system 3-LED three rechargeable AA batteries and an AC adapter/recharger included 45° inclined 360° rotatable monocular head Large plain stage with clips and stain resistant finish Separate coarse & fine focusing Fully coated optical system with high resolution Crystal clear sharp images High quality student microscope Perfect for up to high school students Three levels of magnification: 40X-100X-400X Upward stage stopper to protect slides and objectives Single lens condenser and disc diaphragm Focusing control knobs on both sides Three DIN achromatic objectives One (WF10X) eyepiece included Full optical glass elements Precise ground glass lenses All metal mechanical components Rugged metal frame with stain resistant enamel finish Manufactured under ISO 9001 quality control standard Excellent five (5) year factory warranty Unbeatable low price guaranteed or the difference back! Satisfaction guaranteed or your money back! Specification : Nosepiece: triple Head: 45° inclined monocular Wide-field Eyepiece: WF10X Achromatic Objectives: 4X 10X 40X (spring) Stage Dimensions: 4-3/8 x 4-3/4 (110x120mm) Diaphragm: disc Focusing Control: rack & pinion Illumination: LED bulbs cool (no heat release) Accessories: dust cover Microscope Dimensions: 7-1/2 x 5-1/8 x 15-0 Packing List : One Microscope Body with Monocular Head Four Achromatic DIN Objectives: 4X 10X 40X and 100X One Widefield 10X Eyepiece Three Rechargeable Batteries One Wall-Power AC Adapter/Charger One Pair of Clips One Dust Cover One Wrench for Tension Adjustment User s Manual Shipping Weight: 9 lbs