Features: Equipped with LED Light: Equipped with a high power LED light of high power, brightness can be adjusted, there is a built-in diffuser and a 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 fire YN968N/YN622N(II)/YN685N being slave unit. When YN968N is set as YN622 (slave mode), it can received control signal or trigger signal from master unit YN968N/YN622N(II)/YN622N-TX, and achieves slave flash in TTL/M/Multi mode. When YN968N is set as YN560 (slave mode), it can receive control signal or trigger signal from YN560-TX (II)/RF603 (II)/RF605, and achieves flash in M/Multi mode. High Guide Number, Supports High-speed Sync: GN60@ISO100,200mm, supports high-speed sync TTL, manual flash, multi flash, Gr grouping flash, the highest synchronous speed can reach 1/8000s. Supports USB Firmware Upgrade: The YN968N equipped with the USB interface, supports firmware upgrade, the users can download the upgrade firmware through the Yongnuo official website to upgrade the flash. Newly Upgraded Electric Zoom and Supports Wireless Optical Slave function: supports auto and manual zooming, the flash coverage can be changed between AUTO, 20~200mm; supports receiving YONGNUO, Canon' s and Nikon' s wireless optical master signal, supports 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: Set-top, radio wireless master mode(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 * AA size battery (Alkaline or Ni-MH battery)(not included) Lighting Times: 100-1500 times (AA alkaline cell used) Recycle Time: Approx. 3s (AA alkaline cell used) Flash Color Temperature: 5600K Flash Time: 1/200s~1/20000s Flash Control: 8 levels of output control (1/128~1/1), 29 levels of fine tuning 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, the electronic flash head zooming, sound prompt, automatically saving setting, PC port, power saving mode, overheat protection, custom functions (C. Fn) Item Size: (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 * Color Conversion Filter for LED Light 1 * Protecting Bag 1 * User Manual (English & Chinese)