Compatible with Most TTL Systems | 800Ws, 1/512 to 1/1 Power Output | Up to 300 Full-Power Flashes | Freeze Mode: 1/5020 to 1/35,710 sec | 1/8000 sec High-Speed Sync | 0.01-1.5 sec Recycling Time | Group Color Feature, 2.8" Color Screen | 40W Bi-Color LED Modeling Lamp