Specifications: Circuit design: Insulated Gate Bipolar Transistor (IGBT) Guide No.: 58 (ISO 100, 105mm) Flash mode: M, Multi Triggering mode: Camera set-up,TX, RX, S1, S2 Zoom range: 24, 28, 35, 50, 70, 80, 105mm Vertical rotation angle: -7~90 degrees Horizontal rotation angle: 0~270 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 and external charging port Wireless triggering distance: 20~25m indoor, 10~15m outdoor, 100m(2.4G wireless) Additional features: The electronic flash head zooming, sound prompt, PC prot, power saving mode, overheating protection and auto save settings Item size: 20 * 7 * 5.5cm / 7.9 * 3.0 * 2.2in Item  weight: 366g / 12.9oz Package size: 21 * 10 * 8.5cm / 8.3 * 3.9 * 3.3in Package weight: 541g / 1.19Lbs Package List: 1 * Speedlite 1 * Mini Stand 1 * Protecting Bag 1 * User Manual(Chinese & English)