Tender For supply of xenon head light battery operated (cord less) specifications : 1. adjustable il lumination spot size: 30mm to 80mm spot size range (at 420mm working distance) to fit any examinat ion situation. 2. bright and homogenous xenon light illumination. absolutely bright light shadow less, s ize adjustable spot that is uniform from edge-to-edge for the perfect illumination in all examination sit uations. 3. stepless light intensity control. optimal brightness setting prevents reflexes. 4. flexibility. f lexible power source options: 100% mobility with a choice of cable-free unplugged head-worn batte ry or belt-worn battery pack rechargeable. 5. coaxial illumination. coaxial design ensures a completel y shadow-free image and allows for excellent illumination of difficult to see areas. 6. comfortable and secure fit. the professional l headband has multiple adjustment points and soft padding for comfort a nd stability %u2013 even during long examinations. 7. optional filters: polarisation filter p2 improves contrast and yellow filter reduces blue light. 8. minimum led life: 50000 hrs, 9. minimum light intensit y: 20000 lux, [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ]