Integrated 2.4 GHz X radio system is incorporated into the TT350C for wireless triggering. Able to be set up as a transmitter or receiver, this flash will help you create a versatile lighting setup with a range of 328' and support for 16 channels and three groups. It can also work with an optional X series transmitter for creating more elaborate setups. With a guide number of 118' at ISO 100 and 105mm the TT350C will illuminate most subjects. It also features a zoom head with a range of 24-105mm and a 14mm wide-angle panel for using a variety of different lenses. Manual power control from 1/1 to 1/128 in 1/3 EV steps. Flash head can be tilted from -7 to 90° and rotated a total of 270° for controlling bounce and where the light falls on the scene. Optical receiver mode is available for working with other standard flashes. Runs on two AA batteries which help deliver about 210 full-power flashes and recycle times of 0.1-2.2 seconds.（Batteries need to be purchased separately.） USB connection for installing future firmware updates. With full support for Canon E-TTL / E-TTL II, including high-speed sync, and a built-in 2.4GHz radio system, the compact Godox TT350C Mini Thinklite TTL Flash is an excellent everyday companion for your camera.