VIDEO. The Nikon KeyMission 170 takes good video, at a quality like nearly all Action camcorders. Pictures were sharp though not as much as the better models, which means you can see much but not all details and subtle patterns in the image. In low-light situations, the video was only fair: fairly dim, soft, and grainy
AUDIO. It captures poor audio in mono.
PHOTO QUALITY. In Photo mode it captures at best 8-megapixel stills with merely fair quality.
LENS. The lens has a fixed focal length; it has no zoom capability. The lens also has a very wide-angle (15mm) capability that's very useful for landscapes and group portraits, although you may notice a bit of distortion when you're shooting faces up close, for instance.
IMAGE STABILIZER. Image stabilizer not available in 4k UHD mode.
ADDITIONAL COMMENTS. It survived our repeated-drop test. It survived our water-resistance test. It has a 1.5-inch LCD, which has good quality that lets you compose your shots and has decent playback of video. This model is about average in size and average in weight among all action camcorders.