Buy from Amazon.com : http://fave.co/1x6KkP9 <br /><br />Pentax AF-200FG Electronic Flash with Case<br /><br />Product Description : <br />Clip-on P-TTL auto flash system includes case <br />Guide Number 20 at ISO 100m 28 at ISO 200m <br />Approximately 300 alkaline 400 NiMH or 450 lithium discharges per set of 4 AA-size batteries <br />Discharge angles of 70 horizontally 78 with wide-angle panel 53 vertically 60 with wide-angle panel <br />Uniformly covers the wide discharge angle of a 28mm lens in the 35mm format <br />Compact design
