MK-300 is a mini speedlite flash unit which is light weight on any camera.  <br><br><strong>Features: </strong> <br>MK-300 is a mini speedlight flash unit which is light weight on any camera.  <br>Its guide number is 32 (in focal length 50mm at ISO 100 in meters).  <br>Compatible with E-TTL flash automatically.  <br>Support front curtain synchronous and rear curtain synchronous.  <br>With power saving mode and overheating protection.  <br>Recycle time only needs 6s(with 2pcs AA batteries).  <br>Accurate brightness control.  <br>Metal hot shoe. <br>Equip with LCD display， convenient for operation.  <br>Its small size can make it possible even to carry it in your pockets.  <br><br><strong>Specification: </strong> <br>Circuit design: Insulated Gate Bipolar Transistro (IGBT)  <br>Guide Number: 32 meters (ISO100， 105mm)  <br>Flash mode: E-TTL， M， RPT  <br>Power supply: 2 * AA batteries (battery not included)  <br>Lighting times: 100-1500 times (AA alkaline cell used)  <br>Recycle time: approx. 6s  <br>Color temperature: 5600K  <br>Flash time: 1/200s-1/20000s  <br>Flash control: 1/128~1/1(8 levels of output control)  <br>External interface: hotshoe， Mini USB  <br>Additional features: FEC  <br>Package size：8 * 13 * 7cm / 3.1 * 5.1 * 2.8in  <br>Package weight: 231g / 8.14oz  <br><br><strong>Package List: </strong> <br>1 * Speedlite  <br>1 * Protecting Bag  <br>1 * User Manual(Chinese &amp; English)