Easily winning the great favor of most shutterbugs who are passionate about macrophotography， scientific research or medical shooting， our RF-550D 48-LED Macrophotography Ring Style Flash Light for Canon/Nikon/Olympus/Panasonic will also make you totally satisfied. The ring style flash light equipped with 48pcs LEDs provides high brightness and natural light which contributes to smooth photography. There are 7 levels of brightness adjustable and left !#!amp!*! right flashing functions to offer outstanding stereoscopic impression in order to meet higher shooting demands. You will need it!                                    Features             Clear and bright LCD display<br> 48pcs LEDs to bring high brightness and low consumption<br> Left & right flashing functions to offer outstanding stereoscopic impression<br> Offer bright light as natural as sunlight<br> 7-level brightness adjustable to meet higher shooting demands<br> Ergonomic design， convenient to operate and read information <br>                                                            Specifications             Material     Plastic Housing    <br> Weight     7.12oz / 202g    <br> Color     Black    <br> Dimensions     (0.9 x 4.05)" / (2.3 x 10.5)cm (H x Dia.)    <br> Model     RF-550D    <br> Effective Distance     5cm~1.5m    <br> Flash GN     15    <br> Color Temperature     3000-15000K    <br> Exposure Time     1/100s    <br> Power Supply     4 x AA Batteries    <br> Compatible with     Canon， Nikon， Olympus， Panasonic DSLR    <br> LED     48pcs    <br> Power Rate     Semi Power， Full Power     <br>                                                             Package Includes            1 x Macro LED Ring Flash <br>8 x Adapter Rings(49mm， 52mm， 55mm， 58mm， 62mm， 67mm， 72mm， 77mm)<br>3 x Translucent Diffusers(Orange， Oyster White， Blue)<br>1 x Base<br>1 x User Manual<br>