The power of the Godox QT600IIM can be precisely set from 1/128 to 1/1. This flash features a very short recycling time. The flash unit's 150W modeling lamp is also adjustable for better previewing of final effects. It can be set from 5% to 100% power or simply turned off. The impressive functionality of this studio flash is completed by stroboscopic mode, HSS, color temperature stability mode, and the integrated X System receiver. Godox QT series flashes are available in different power versions, up to 1200Ws. They are characterized by a flash power adjustment range of up to 7 f-stops (1/1 - 1/128, with 0.1 EV precision). The full-power flash recycling time is less than 0.9s. At minimum power, they achieve a very short flash duration of only 1/28984 s, which offers a lot of freedom during photo sessions. The flash color temperature is 5600 K and can fluctuate by ± 200 K depending on the set flash power. The flash has several operating modes, but the color temperature stability mode certainly deserves more attention. The built-in X System receiver allows remote flash triggering (up to X-Sync time), changing flash power and mode. Additionally, the QT400IIM is equipped with a USB port for connecting XT16, FT-16, or X1 TTL system receivers. It can also be connected to triggers of other brands via the 3.5 mm jack input port. The panel on the back of the flash is very simple, readable, and functional. The LCD screen displaying flash settings is readable even from a rather wide angle. Next to the screen is a practical knob for adjusting flash power, changing the radio communication channel, and changing flash groups. The series of five buttons below the LCD screen allows quick access to all flash settings and functions. The 150W halogen modeling lamp can operate autonomously independently of the flash power (brightness manually adjustable) or be linked to the flash power (proportionally). The modeling light can be automatically turned off for the duration of the flash or remain on without interruption. With this flash, various types of light modifiers can be used, such as: reflectors, softboxes, snoots, beauty dishes, and others equipped with a Bowens mount. Package contents: Godox QT600IIM studio flash, power cable, reflector, modeling lamp, protective bulb cap, original product box. Seller's warranty: 2 years (lamps and bulbs are covered by a 3-month warranty).