1. TWO MODES OF OPERATION: Eyepiece support manual or automatic white balance, manual or automatic exposure, stainless steel metal case is 2. SENSITIVE AND ACCURATE: Electronic eyepiece 2MP , scanning, possess low illumination and high sensitivity 3. PERFECT REPLACEMENT: Used to replace the eyepiece on conventional microscopes, converting existing conventional microscopes with 23mm or 30mm eyepiece diameters into digital microscopes 4. MULTIPLE FEATURES: More powerful eyepiece with new features such as measurement, calibration, note taking and comparison Color: Black Material: plastic Package Contents: 1 x Electronic eyepiece Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.