The pocket size of Nissin i40 weights only 203g of weight. It is suitable for filling shadows on even the sunniest of days, suitable for family shooting, indoor/ outdoor shooting and especially suitable for traveling. Professional functions are included: Wireless TTL mode; Supports up to 1/8,000 seconds shutter speed; Flash output of GN40 at 105mm; Video light function with 9 steps of output level adjustment; Simple operation panel with two selector dials to operate the flash; Flash head tilts up and rotates horizontally to right and left for making bounced lighting more versatile by utilizing more angles. A Soft box is supplied.\n\nSelector dial- Simply operation panel\nNissin i40 has two selector dials controls: Function dial and Power dial. The Indicated lamp A/B/C will show the position of adjustment. Even beginners can quickly get started.\n\nLED Video light NEW!\nNissin i40 has a video light function, which has 9 steps of output level adjustment.\n\nProfessional flash head design\nThe flash head rotates horizontally 180° to right and left and tilts up 90°which is suitable for close up photography. This makes bounce shooting more arbitrary, with more angles that can be used.\n\nManual zoom (M zoom) NEW!\nNissi i40 support 24-105mm auto zoom.\nAnd Manual Zoom are available in M, SD, SF, Wireless mode. The manual setting you selected is memorized and remains unchanged when power on.\n\nSupports high-speed synchronization：\nSupports up to 1/8,000 seconds shutter speed.