Pentax's weather-sealed battery grip for the K-3 and K-3 II: a second D-LI90 battery (or AA cells) and vertical controls, sealed to the same standard as the bodies.
Full specs coming soon.
Select up to 2 cameras to compare against the D-BG5 Battery Grip. It's always pinned as the baseline.
Use-case data coming soon.
Use-case data coming soon.