The X1-C are separate transmitter and receiver units, with X1-C receivers being compatible with MK II style Canon compatible speedlites like the 580EX II and 600EX-RT etc. As well as Canon ETTL compatible flashes like Godox’s own V860C. As well as the traditional Canon A:B C ratio style interface, the X1-C provide a full GR Group style interface allowing up to 5 Groups to be individually set to either TTL, Manual, or Off.

So most importantly TTL and Manual Groups can be conveniently mixed together as needed.

Sync speed: 1/8000 (HSS)

Features:

Godox 2.4GHz RF Radio System

Range – 100m +

Flash Modes – ETTL / M / OFF

HSS to 1/8000th

Second Curtain Sync

FEC / FEB – 1/3rd Increments (±3 Stops)

FEL (Flash Exposure Lock)

Manual Flash – 1/128 – 1/1 Output (1/3rd Increments)

Remote Flash Zoom

GR Group Mode – A / B / C / D / E  (5 Groups)

Ratio Group Mode – A / B / C

32 Channels

Large LCD Display

Back Light On-Off Switch

HSS Delay Setting – 0~19.9ms, (100us Increments)

Modeling flash

Auto Memory Function

AF Assist light (With an On/Off Switch)

Wireless Shutter Release

Micro USB Port for Firmware Upgrades

Transmitter PC Sync Port – Input & Output

Receiver 2.5mm Sync and Shutter Release Port – Output