Genuine Leica SF C1 Remote Control Unit #14626
The Leica SF C1 remote control unit adds a multitude of creative options. 
It is mounted on the hot shoe of the camera and enables wireless remote control of SF 60 flash units in the 2.4-GHz frequency band. 
The flash units can be organised in up to seven channels, each with three groups, and controlled either together or separately with different settings.
The SF 60 does not necessarily have to be connected directly to the camera. Instead of being mounted on the camera, 
the new flash unit can also be used as a remote slave flash and, in combination with the Leica SF C1, for illuminating the subject from any desired angle.

In this way, the SF C1 controller enables you to go far beyond what is usually possible with a single SF 60 flash. 
The flash units, which may be at distances of up to 100 meters from the SF C1 mounted on the camera, 
can be controlled as a single group or split into up to three separately controlled groups.
For instance, you can separately control the output of a single flash unit with a beauty dish, 
a spotlight, and further units for lightening shadows and illuminating the background.

Like the flash, the SF C1 is controlled from a similar color LCD. 
Two AAA batteries will provide enough power for the S1 to fire in up to 3,000 images. 
A micro SD card slot will allow the control unit to receive firmware updates in the future.