YONGNUO YN585EX P-TTL Wireless Speedlite Flash Light GN58 HSS 1/12000s SP S1 S2 Slave AF-assist Rear Curtain SYNC LCD Screen for Pentax K-1 K-S1 K-S2 K-3 K-3II K-70 K-50 DSLR Camera

YONGNUO YN585EX wireless speedlite is compatible for Pentax flashing system. It can receive signal from AF-360FGZ, AF540FGZ II and P's master units, supporting 4 channels. With three flash mode: P-TTL, M, Multi flash mode, GN58 @ISO100, it supports Exposure compensation, Bracket Exposure, Rear-Curtain SYNC, Red-eye Reduction, 20 - 105mm auto/manual zoom, AF-assist, and setting and saving advanced settings. Ultra-fast recycle time 3s at full output ensures a smooth shooting process.

P-TTL, M, Multi; 4 channels, effective wireless distance 20m ~ 25m indoor, 10m ~ 15m outdoor.  
GN58 @ISO100, 8 output levels (1/128-1/1), 29 levels of fine tuning, flash time 1/200s - 1/12000s.
Support Exposure compensation, Bracket Exposure, Rear-Curtain SYNC, Red-eye Reduction, High-speed Continuous Shooting.
Support Auto/Manual zooming, the zoom range from 20 - 105mm.
Support advanced option settings and save it automatically.
Equipped with the AF-assist beam emitter, allows you to focus easily in dark environment.
Sound prompt system, different sound modes for different working status, hear it and identify it.
Clear LCD screen show working status and display real-time battery power.
Can rotate -7° ~ 90°vertically, 180°horizontally(towards the left/right).
With USB interface, you can upgrade firmware from the Yongnuo official website; with 2.5mm PC synchronous interface.

(Not included.)
External Interface: Hot shoe, PC Port, USB Port
Item Size: 18.4  * 6.6 * 4.4cm / 7.2 * 2.6 * 1.7cm"
Item Weight: 369.5g / 39oz
Package Size: 21 * 9.7 * 8.1cm / 8.3 * 3.8 * 3.2"
Package Weight: 574g / 19.3oz

Package List:
1 * Speedlite
1 * Mini Stand
1 * Carrying Bag
1 * User Manual(English/Chinese)

Note:
Battery are not included.