Model Number: YN-565EX N (#2015) Brand Name: YongNuo Key Specifications/Special Features: Circuit design: insulated gate bipolar transistor (IGBT)Guide number: 58 (ISO 100, 105mm)Flash mode: TTL, M and multiWireless trigger: N's and C's wireless system, S1/S2 pre-flash-canceled modeWireless triggering distance: 20 to 25m indoor and 10 to 15m outdoorSlave groups: 3 (A, B and C)Channels: 4Zoom range: auto, 24, 28, 35, 50, 70, 80 and 105mmVertical rotation angles: -7 to 90°Horizontal rotation angle: 0 to 270°Power supply: 4 x AA size batteries (alkaline or Ni-MH are usable)Lighting times: 100 to 1,500 times (uses AA alkaline cell)
Recycle time: 3s (uses AA alkaline cell)
Color temperature: 5,600K
Flash time: 1/200 to 1/20,000s
Flash control: 8 levels of output control (1/128 to 1/1), 22 levels of fine tuning
External interface: hot shoe, PC port and eternal charging port
External power: Yong Nuo external charging boxes like SF-18C and SF-17C
Additional features: rear-curtain sync, FEC, FEB, FEV, modeling flash, manual zoom, auto zoom, sound prompt, advanced setting, automatically saving setting, PC port, power saving mode and over heat protection
Dimensions: 60 x 190 x 78mm (extended state)
Net weight: 380g
Accessories: flashlight (1), protecting bag (1), mini stand (1) and manual (1)