Pixel X900C Flash Speedlite for Canon, ETTL/M/Mult HSS 1/8000s Flash for Canon DSLR Camera EOS 6D Mark II 1D Mark III Lithium Battery: Adopts detachable lithium battery, high-quality polymer lithium battery cell, it has 7.3V high voltage, high performance, high power of 3200mA and high storage power. Full light output is up to 700 times, the Recycle Time is 1.5sec Equipped with LED light: The X900 Speedlite is equipped with LED light, single switch to control single circuit design, which has no effect on speedlite. When the shooting result shows the light is too weak, you can use the LED light focus the camera Wireless Control: 2.4GHz wireless transmission, its hard to affect by barriers. It can realize all-round signal transmission above 50m and the wireless control between speedlites. Meanwhile, without receiver, the speedlite can be directly controlled by King PRO transmitter High compatibilityUsers can upgrade firmware through Mini port to enjoy official and thoughtful services form Pixel Multi-Function:The speedlite has the configurations of High Speed Sync, High GN, Wireless Control, Stroboscopic and so on. The frequency of stroboscopic is up to 500 times, the performance is more strong and stable. It also support optical wireless Master/Slave control