Powerextra speedlite with a guide number of 33 (ISO 100/1m), Support manual mode, S1 and S2 wireless flash trigger modes, Single-contact hot shoe. Vertical Rotation Angle: 0~90 Degrees, Horizontal Rotation Angle: 0~270 Degrees. Compatible with Canon, Nikon, Panasonic, Olympus, Pentax, Fujifilm, and Sony cameras with Mi hot shoe, such as a9, a7, a7II, a7III, a7R III, a7RII, a7SII, a6000, a6300, a6500 ❗NOTE: NOT Compatible with Canon EOS Rebel SL3/250D, Rebel T7/1500D, 2000D, Rebel T100/3000D, 4000D,Sony A Series DSLR ❗ The flash has 8 level of power output control which indicated by 8 pieces of LED lamp for different level. Powered by 4 pcs AA-size battery backup, provides PC port, you can make the flash synchronous by connecting to the PC port. Approximate 3.0 seconds flash recycle time, Power saving automatic shutdown function, automatic save function. For a test flash, Press the test button to fire a test flash with the current mode settings. Package included: Powerextra DF-400 speedlite ×1, Protective bag ×1, Mini Stand ×1, Instruction manual ×1 Powerextra