Godox The V350C TTL with lithium battery is a hot shoe flash compatible with Canon's TTL system, equipped with a built-in 2.4Ghz receiver. Compared to the TT350, it has a lithium-ion battery power (7.2/2000mAh) that offers a recycling time of 0.1s to 1.7s and over 500 flashes at full powerpower.The panel LCD offers a clear display of the settings. The built-in 2.4Ghz receiver has a range of action of over 50 meters; the XproC compatible transmitter can be used to control Godox speedlite, studio flash and also the camera shutter. Full support of TTL, HSS functions (up to 1/8000sec), front and rear curtain sync, FEC, Multi flash (strobe), manual flash, ID setting. from remotDrive .36 (ISO 100 105mm)Power range 22 steps (1/1-1/128)Firware upgrade via USB.