Frequency Band :
2.4 GHz
Channels :
40; (20 in Normal mode – green / 20 in Speed mode – red)
Groups :
4: 1, 2, 3, 4
Flash synchronization :
Normal: limited to the native X-sync of your camera Hi-Sync mode: up to a 1/8,000 sec.
2nd curtain sync: only Canon
Range :
Up to 200m (656') for triggering
AF Assist Beam :
Yes
Connection :
Foot for Canon hotshoe (19366) and Nikon hotshoe (19367) Mini-USB for firmware updates
2.5 mm remote release
Power source :
2x AA batteries
Indicators and Controls :
LCD screen display:
Sync mode, group, channel, ODS activation, Hi-Sync activation, shutter mode, remaining battery power, flash unit name, flash unit ID, flash unit power level, flash unit modelling level.
Buttons:
Group selection, test, rotation ring to change values, confirmation, on/off and refresh.
There are also 4 buttons with variable functionality:
Power +/-, Modelling lamp off/prop/free, Individual unit selection and setup on the dashboard. Menu up, menu down and exit in the setup menu.
Dimensions :
84.1 x 68.3 x 58.5 mm (3.3 x 2.7 x 2.3")
Weight :
120 g ( 0.27 lbs.) without batteries