Specifications: Circuit design: Insulated Gate Bipolar Transistor (IGBT) Guide No.: 60 (ISO 100, 105mm) Flash mode: TTL, M, Multi,GR Triggering mode: Camera set-up,wireless master mode, wireless slave mode, Sc,Sn, S1, S2 Zoom range: 20, 24, 28, 35, 50, 70, 80, 105,135,200mm Vertical rotation angle: -7~90 degrees Horizontal rotation angle: 0~360 degrees Power supply: 4* AA size batteries (not included) Lighting times: 100~1500 times (AA alkaline cell used) Recycle time: approx. 3s (AA alkaline cell used) 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  Wireless triggering distance: 20~25m indoor, 10~15m outdoor Optical transmission triggering distance: Up to 100m Additional features: master flash, high-speed sync,second-curtain sync, FEC,FEB,FEV, The electronic flash head zooming, sound prompt, automatically saving setting, PC port, power saving mode, over heat protection and advanced options setting Item size: 20 * 7.5 * 6.5cm / 7.9 * 3.0 * 2.6in Item  weight: 420g / 14.8oz Package size: 22 * 10.5 * 9.5cm / 8.7 * 4.1 * 3.8in Package weight: 636g / 1.4Lbs Package List: 1 * Speedlite 1 * Mini Stand 1 * Protecting Bag 1 * User Manual(Chinese & English)