They are rather small - they can be comfortably attached to a shirt pocket, collar, hat, or even specially designed sunglasses. They are recording what an officer actually sees as he goes about his job. Others mount to the shoulder or collar of a uniform and record from a slightly lower perspective. Most are roughly the size of a Scotch tape dispenser. That's something between a large strawberry and a lemon.
Beyond that, features vary by model. There are more than a dozen to choose from, made by different companies. Extras include high-definition video, wireless operation, anti-tampering safeguards, one-touch activation, ultra-wide-angle views, auto-adjusting low-light modes and night vision.
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