The compact, airtight body of the WG-90 is not only waterproof up to 14 meters deep for up to two hours of continuous operation (equivalent to IPX 8 or JIS Class 8), but it is also resistant to falls from a height of 1.6 meters, dust (equivalent to IP6X or JIS Class 6), freezing temperatures up to -10°C, and crushing weights up to 100 kgf (kilogram-force). Thanks to this rugged construction, the WG-90 performs exceptionally and reliably even in harsh, demanding external conditions.

The WG-90 features a high-performance five-times optical zoom lens with a focal length coverage from 5 mm to 25 mm (equivalent to approximately 28 mm to 140 mm in 35 mm format) to accommodate a wide range of scenes and subjects, such as landscapes. It also provides other user-friendly shooting functions, such as the Smart Zoom function that extends the zoom range by approximately 36 times (equivalent to 1008 mm in 35 mm format) for extremely high magnification telephoto photography without compromising image quality, and an interval shooting function that is useful for stationary point photography.