Characteristics: This lampa equipped with a universal kontakt with a hot shoe is compatible with Canon digital SLR cameras and other brands. 4 flash modes: M (Manual), Multi, S1 and S2, meet all your shooting needs. With a 3,5 mm lampa synchronization input port, the flash will work synchronously when the synchronization port is connected. The power saving function, in M and Multi modes, the lampa will go into standby mode after about 30 minutes if it is idle. The overheating protection feature will be activated if you continue to flash too many times. You can use it normally after it has cooled. Technical data: Circuit design: automatic bipolar transistor with isolated gate (IGBT) Guide number: 33 (ISO 100, 35mm) Flash range: Constant focus, flash speed rotation (reflected flash) Flash Mode: M, S1, S2, Multi Wireless trigger: S1 or S2 photo tone Wireless flash distance: 20-30M Reflection position: up or down 0 or 90°, left or right 0 or 270° Color Temperature: 5500k Flash duration: 1 or 200s - 1 or 20000s Flash control: 1 or 128-1 or 1, 22 levels of tuning External interface: hot stopka, synchronization socket 3,5 mm, external power socket C Recycling time: 0,1-5 S (using AA alkaline battery) Lighting times: 100 - 1500 times (using AA alkaline battery) Product weight (without battery): 316g or Package Weight: 400g or 14.1oz Note: Batteries are not included. The camera shown in the picture is not included. List of packages: 1 x Speedlite 1 x carrying bag 1 x Mini Stand 1 x User Manual (English and Chinese)