The HLD-7 Battery Grip from Olympus is designed for use with the OM-D E-M1 Micro Four Thirds digital camera. The HLD-7 features a shutter release, two control dials and two function buttons for shooting vertically, in order to afford the same ease of operation you enjoy when shooting in horizontal position. Having an extra battery in the grip with another in the camera, you can capture approximately 680 shots per charge. Its dust- and splash-proof design also complements the weather resistant construction of the E-M1 for shooting in inclement conditions. Furthermore, battery and grip sections are separated, and an optional Grip Strap GS-5 is available for added security.