| Mount | Shoe |
| Guide No. | 197' (60.05 m) ISO100 at 200 mm position |
| Exposure Control | E-TTL / E-TTL II, Manual |
| Angle of Coverage | 94° - 12° |
| Wide-Angle Adapter: 114° | |
| Vari-Power | 1/1 - 1/128 |
| Bounce Head | -7° to +90° |
| Swivel Head | 360° |
| Coverage | 14 mm - 200 mm (Full frame) |
| Distance Range | 1.64 to 98.43' (0.5 to 30 m) at f/1.4 |
| Zoom Head | Full frame: 20 mm - 200 mm |
| Off-Camera Terminal | PC, Proprietary |
| Recycle Time | Approximately 0.1 - 5.5 seconds |
| Flash Duration | 0.0018 - 0.0023 sec @ Full Power |
| Flash-Ready Indicator | Yes |
| Compensation | -3 EV to +3 EV (in 1/2 and 1/3 EV steps) |
| Wireless Operation | Method: RF |
| Distance: Up to 98.43' / 30 m | |
| Method: Optical pulse | |
| Distance: Up to 49.21' / 15 m | |
| Wireless Communication Channels | 4 Channels |
| Wireless Groups | 5 Groups |
| Power Source | 4x AA Alkaline, Lithium, Rechargeable NiMH Batteries |
| Dimensions (WxHxD) | 3.1 x 5.6 x 4.9" / 80.0 x 143.0 x 125.0 mm |
| Weight | 15 oz / 425.25 g without batteries |
| Packaging Info | |
| Package Weight | 2.0 lb |
| Box Dimensions (LxWxH) | 6.6 x 5.9 x 4.6" |