Take properly exposed photos easily with the Canon E-TTL / E-TTL II functionality of the SFD680 Power Zoom Digital TTL Flash from Bower. It has a guide number of 139' at ISO 100 and 85mm for illuminating your scene along with a zoom range of 28-85mm. Also the head tilts upward 90° and will rotate right 150° or left 180°. Also, it has a power saving mode and comes with a diffuser. It has a recycle time of 0.1-6 seconds and runs on 6 AA batteries.