The small flash unit Godox TT350C Mini Thinklite TTL Flash is an excellent everyday companion for your camera as it is fully compatible with Canon's E-TTL / E-TTL II system, syncs at high speed, and features a built-in 2.4GHz radio system. Its lightweight design and guide number of 118' at ISO 100 at 105mm make the TT350C unit ideal for use with or without a camera. The user can also use it individually as an optical slave device as well as a radio TTL master/slave unit. The 270° rotation capability and the head tilt capability from -7 to 90° add even greater flexibility.