Opteka EF-710 DG Super TTL Autofocus Dedicated Flash for Pentax K-30, 645D, Q, K-5, K-r, K-x, K-7 and Samsung NX10, NX100 Digital SLR Cameras

The Opteka EF-710 DG SUPER TTL is designed to work with the all Pentax and Samsung digital SLR cameras, It has a maximum guide number of 72 feet or 22 meters at 35mm focal length (ISO 100). The EF-710 DG is an ideal flash unit for beginners in digital SLR photography, but it is also useful for hobbyists and professionals looking for a handy TTL flash unit offering an effortless bounce flash function. The bounce head can be tilted in 5 steps - horizontal, as well as 45, 60, 75 and 90 degrees.

Features
~ Bounce head - Flash can be tilted in 5 steps - horizontal, as well as 45, 60, 75 and 90 degrees
~ AF assist - LED light beam helps the camera to focus in low-light
~ Automatic shutter speed setting
~ Flash readiness indicator
~ Front and Rear Curtain Synchronization
~ Battery-saving mode shuts down power after 5 minutes
~ 1 Year Warranty

Specifications
Type: Shoe Mount
Guide No: 72' (22 m) at 35mm
AF Illuminator: 3.3ft-20ft/1-6m (50mm Lens)
Flash Duration: 1/2000 to 1/40,000 second
TTL Dedication: Yes
Bounce Head: Yes
Recycle Time: 0.3-10 seconds (based on fresh batteries & full power)
Power Source: Two 1.5-Volt "AA" batteries (alkaline, lithium, Ni-cd & Ni-MH)
Dimensions: 65mm x 54mm x 98mm
Weight: 127g (without batteries )