Professional instrument at an affordable price! Suitable for middle and high school students, cordless microscope is perfect for general microscopy exploration. Durable microscope has a modern, modular design on a very stable base. Sturdy and unique arm includes a built-in handle for ease of carrying. Innovative, integrated storage system for the power cord reduces unsightly tangled cords. Reverse nosepiece makes it easy to insert and manipulate slides. Features include: • 19mm, 10X wide field eyepiece 4X, 10X, 40XR DIN achromat objectives • Separate coarse and fine coaxial focus adjustment knobs • Cool Lighting with patented LED bright white light with rheostat intensity control • Rechargeable NiMH batteries that last up to 40 hours and recharge in 8 • Storage space for charging adapter • 10 year warranty