Features: K4TEX is the only 400w mini outdoor light which with Canon, Nikon, Sony , Pentax , Fujifilm system in one flash on the world. 1. Due to high speed sync, the k4T can support the whole-progress sync, the fastest can be 1/8000s, which can capture the fact-paced action; 2. K4T owns 5 steps strobeoscopic, it allows more creativity; 3. With 1GBT digital circuit, 8 stops of output power(1/1-1/8), K4T can perfect surpress the sunlight or give an adom at high F-numbet. Its TTL exposure is adjustable to +/-3 EV steps; 4. One-click switch the system by ABC trigger, Manual Mode/ Auto Mode to flexible control the output; 5. LI-ion Battery can support 650 times at full output after one full charged.