Meike&reg; MK910 i-TTL iTTL Flash Speedlight 1/8000s for Nikon Camera Can be used Indoors or Outdoors Power source:1.5V AA size batteries (not included) This unit does contain a flashing light Bracket Arm Movement: Fully adjustable(0-90 downward tilt,0-360 L/R rotation) Dimensions of the camera are 5 one half inches x 3 inches x 2 and one half inches (without rain shield). With the rain shield the dimensions increase to 7 x 3 x 3 inches.