| Flash | |
| Type | Radio transmissions wireless Speedlite transmitter |
| Compatible Cameras | Type A EOS cameras (E-TTL II/E-TTL autoflash) |
| Sync Speed | High-Speed Sync provided (EOS-1D X and EOS 5D Mark III only) |
| Flash Exposure Confirmation | Flash exposure confirmation lamp lights in green
* If it does not light, shooting is not performed with the standard exposure |
| AF Assist Beam | N/A |
| Wireless Functions | |
| Transmission System | Radio Transmission |
| Transmission Range | Approx. 98.4 ft. (30m) |
| Flash Ratio Control | 1:8 - 1:1 - 8:1, power 1/2-stop increments |
| Flash Coverage | Transmission Angle: 360° all around |
| Slave Operation Confirmation | Green Light
Lit: Radio Transmissions Okay
Red Light
Lit: Not Connected
Blinking: Transmission Error/ Too many units (Master units + slave units = more than 16 units)
Orange Light
Lit: Sub-master transmission
Blinking: Receiving remote release shooting, linked shooting signal |
| Slave Unit SE Mode Cancellation | The test flash button can be pressed to test if the slave units fire or cancel the auto power off status. |
| General | |
| Power Source | AA/LRG Alkaline Batteries x2 (Ni-MH and Lithium batteries can also be used)
Battery Life: Approx. 10 hours continuously *When using AA/LR6 alkaline batteries used (At a room temperature +23°C/73°F). |
| SE Mode | Power off after 5 min. of idle operation |
| Dimensions | 2.65 (W) x 2.42 (H) x 3.05 (D) in. / 67.4 (W) x 61.5 (H) x 77.4 (D) mm |
| Weight | 3.9 oz. / 110g (excluding battery) |