9902.12.51 - Camera cases of transparent polycarbonate plastics, designed to encase cameras of subheading 8525.80.40; each incorporating buttons for the operation of the camera, an opaque plastic base that clips into a camera mount, a thumb-screw on the base mount that allows for adjustment of the camera viewing angle on a pivot, a silicon gasket in the door of the case that allows for waterproof operation of the camera at a depth of more than 40 m but not more than 60 m, a flat and optically-coated glass lens and a heat sink to dissipate camera heat (provided for in subheading 4202.99.90).

This HTS classification, 9902.12.51, specifically designates camera cases constructed from transparent polycarbonate plastics. These cases are meticulously engineered to enclose cameras falling under subheading 8525.80.40. Key features that define this classification include integrated buttons for camera operation, an opaque plastic base designed for secure attachment to camera mounts, and a thumb-screw mechanism enabling adjustable camera viewing angles via a pivot. Furthermore, these cases incorporate a silicon gasket within the door to ensure waterproof functionality at depths between 40 and 60 meters. A flat, optically-coated glass lens and a heat sink to manage camera heat are also essential components.

While this specific HTS code falls under Chapter 99, which deals with temporary legislation and trade agreement modifications, its detailed description distinguishes it from broader categories within the HTS. Unlike general provisions for plastic articles or camera accessories, this code is highly specific to the combination of materials, protective features, operational integration, and performance parameters (like waterproofing depth) of these specialized camera enclosures. It is important to note that this is a leaf node, meaning there are no further subdivisions under this particular HTS code. Therefore, classification hinges entirely on the precise fulfillment of all enumerated characteristics within this detailed description.