B series is a newly HD industrial endoscope with optional diameter of 3.7mm, 4.5mm, 5.5mm, 6mm and 9mm. One main body can match different insertion tube. Unique function of strong light inhibition and weak light compensation help to avoid the influence of strong light and weak light. Rotatable image with freeze and 4times magnification function; Strictly in accordance with ISO9001 quality system standard, approved CE, RoHS, product quality stable and reliable. Water proof grade: Probe IP67 / Monitor IP54.