Features Equipped with LED light: Equipped with high-power high-power LED light, the brightness can be adjusted, there is a built-in diffuser and color conversion filter for the LED light. Compatible with YN622N (Master/Slave) and YN560 (Slave) wireless system: When YN968N is used as master unit, it can control and power YN968N/YN622N(II)/YN685N as slave unit. When YN968N is set to YN622 (slave mode), it can receive control signal or trigger signal from YN968N/YN622N(II)/YN622N-TX main unit, and realize slave flash in TTL/M/ Multi. When YN968N is set to YN560 (slave mode), it can receive control signal or trigger signal from YN560-TX(II)/RF603(II)/RF605, and realize flash in M/Multi mode. High Guide Number, support high-speed sync:GN60@ISO100,200mm, support TTL high-speed sync, manual flash, multi-flash, Gr grouping flash, the highest synchronous speed can reach 1/8000s . Support USB Firmware Upgrade: The YN968N equipped with USB interface, support firmware upgrade, users can download upgrade firmware through Yongnuo official website to upgrade the flash. Newly upgraded electric zoom and supports wireless optical slave function: Supports auto and manual zoom, flash coverage can be changed between auto, 20~200mm; Support wireless optical main signal receiving from YONGNUO, canon and nikon, support S1 and s2 flash mode. Specifications: Brand: YONGNUO Model: YN968N Circuit Design: Insulated Gate Bipolar Transistor (IGBT) Guide No.: 60 (ISO 100, 200mm) Flash Mode: TTL, M, Multi, Gr Trigger Mode: Decoder, Master mode without radio wire (YN622), radio wireless slave mode (YN622/YN560), wireless optical slave mode (C/N slave, S1, S2) Zoom: Auto, 20, 24, 28, 35, 50, 70, 80, 105, 200 Vertical Rotation Angle: -7 ~ 150 degrees Horizontal Rotation Angle: 0 ~ 360 degrees Power Supply: 4 x AA size batteries (Alkaline or Ni-MH batteries) (not included) Lighting time: 100-1500 times (AA alkaline battery used) Recycling time: approx. 3s (AA alkaline battery used) Flash color temperature: 5600K Flash time: 1/200s ~ 1/20000s Flash control: 8 levels output control (1/128 ~ 1/1), 29 levels fine adjustment External interface: Hot shoe, PC port LED color temperature: approx. 5500K LED Luminance: Approx. 300lux (1m) Optical Transmission Triggering Distance: 20~25m indoor, 10~15m outdoor Radio Transmission Triggering Distance: up to 100m Additional Features: Master Flash, High Speed Sync, Second Curtain Sync , FEC, FEB, FEL, electronic flash head zoom, sound prompt, auto record setting, PC port, power saving mode, overheat protection, custom functions (C. Fn) Item: (extended state) 7.8*6.05*20.6cm / 3.1*2.4*8.1in Item weight: 435g / 15.3oz Package size: 22*10*9cm / 8.7*3.9*3.5in Package weight: 650g / 22.9oz Note: Batteries are not included. Package List: 1* Speedlite 1* Mini Stand 1* LED Light Color Conversion Filter 1* Protective Bag 1* User Manual (English and Chinese)