This is a 216ED-551 intensity direction adjustable ring light with mounting size up to 61mm in diameter. The light ring is consisted of 4 individual portions (4 lighting zones) that can be turned on/off separately. You may use the feature to change lighting directions and obtain the best illumination for your application. The ring light has 61mm inside and 98mm outside diameters. It works with power supplies from a 90V-264V and comes with a 48 mm in diameter ring adapter. With variable intensity control, it provides cool, even, intense and focused shadow-free illumination. It is an ideal durable cool light source for all stereo microscopes, especially for gemological, coin and gem/jewelry microscopes.

Features:
144 bright white LED bulbs
Lighting direction changeable
Variable intensity control

Specifications:
● Light Control: 4 mode light control, each mode has an adjustable brightness
● Outer diameter: 98mm
● Inner diameter: 61mm
● Wattage: 4.5W
● Input Voltage: 90V-264V
● Output Voltage: DC12V
● Brightness Adjust: 0-100%
● Working Distance: 40-250mm
● Quantity of LED: 144 pieces
● Brightness: 20000Lux at height of 100mm
● Color of light: 6400K
● Controller's Dimension: 110mm x 60mm x 32mm 

Packing List:
1x 216ED-551 Ring Light
1x Control Box
1x Power Cable
1x 48mm Ring Adapter