Brand: OLOONG - Model: 551EX - Quantity: 1 - Color: Black - Material: PC + ABS - Compatible camera brand: Nikon - Compatible models: D3000 D5000 D3100 D5100 D7000 D50 D60 D70 D70S D80 D90 D200 D300 D300S D700 D3S D3X P7100 etc. - LED quantity: 2 - Color temperature: 5500K - Brightness: 1000lm - Power supply: 4 x AA batteries - Working voltage: 6V - Power: 10W - Certification: CE - TTL (I-TTL for Nikon E-TTL II for Canon) - 1/8000 high speed synchronization (551EX) - Auxiliary LED camera light - Lattice LCD + LED backlight - Support Nikon or Canon wireless flash instruction system - Support flash custom menu contact full function flash (metal hot boot holder) wireless remote control shutter (can be LED flash sync) - Support stroboscopic mode F1 / F2 LED flash mode - Support front / rear curtain sync - Support red eye reduction flash mode - Wireless slave mode to prepare light - Support machine top / wireless TTL exposure compensation setting - Support wireless manual control output - Support machine top / wireless TTL exposure lock - Fast back: 2 seconds (4 x AA Ni-MH rechargeable batteries) - Used as a master control unit (551EX) participate in exposure - Flash index: GN 30 (ISO 100 50mm focal length) - Manual flash: 1/128~1/1 - Step length: 0.3EV - Low electricity hint key lock the parameters of memory function temperature detection (anti high temperature alarm) - 1.5" LCD screen display - 551EX for Nikon as a master control unit usable instruction remote OLOOKG 550 EX / 551EX / SP-660II / SP-690II Nikon SB600 / 700 / 800 / 900 / 910; As a subordinate unit can receive OLOONG SP-690II / 551EX / Nikon SB700 / 800 / 900 / 910 and SU-800 and Nikon D700 / D7000 / D300S / D90 etc. the command signal in the camera flash C - Packing list: - 1 x Speedlit - 1 x Base - 1 x Pouch - 1 x Chinese & English user manual