This dust, splash and freezeproof power battery holder has been exclusively developed for the use with the Olympus OMD EM1. The HLD7 extends the using time and allows for more flexibility in portrait shooting with an additional shutter button. Furthermore this accessory is also equipped with 2 control dials and 2 function buttons.To optimize the handling when working with the HLD7, a special optional grip strap (GS5) is available. For long periods of continuous shooting the AC3 AC Adapter is a perfect additional accessory.