The large rack of gear dug into my shoulders and my jury-rigged chest harness made it hard to breathe.

WSJ: Training for the Big Wall | By Michael J. Ybarra

To enhance creative expression during shooting PENTAX offers an optional lens adapter with wide-angle coverage to 20mm, and the SportMount Chest Harness which allows for the hands free capture of adventures and features a quick and easy mechanism to review your images and footage without having to remove the camera from its mount.

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It's a video camera worn in a harness on the chest and indeed he was seen, a witness said so, with this device.

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