Features Brand: Yongnuo Model: WJ-60 LED color temperature: 5500K Power source: 3 x AAA batteries Battery operating life: 2hours LED quantity: 60 LED brightness: 450lum LED life: above 10000hours Package Content 1 x Yongnuo WJ-60 macro photography LED ring light 1 x Hot shoe adapter (without contacts) 1 x Converting ring at 49mm 1 x Converting ring at 52mm 1 x Converting ring at 58mm 1 x Converting ring at 67mm Other converting rings and English manual are not included. Instruction on package not in English.User Manual Insert the suitable batteries Select a converting ring according to you camera macro lens size, install the converting ring and then put the WJ-60 to the lens Turn on the power, adjust the brightness by clicking L or R button. Then you can start taking photo If you want to mount it on the top of the camera, please install the cold shoe to the WJ-60 first, then connect it to hot shoe of camera The button in the middle is power switch, Up is power on while Down is power off Press L for few seconds to turn on the left inner LED group, it can be then switched to different LED groups by quick press on L every time. Or you can press R for few seconds to turn on all LED lights, and switch to different LED groups by quick press on L every time