The WP-DC51 Waterproof Case from Canon is an underwater housing enabling you to shoot beneath the surface with your PowerShot S120 digital camera. It has a depth rating of 131'. The case is constructed from durable, corrosion-resistant polycarbonate, which is clear to enable you to monitor the O-ring seal and camera. It has an integrated flat glass lens port. The WP-DC51 provides access to all camera functions via mechanical controls.

The camera's built-in pop-up flash is usable, and a supplied diffuser softens its light to prevent glare, backscatter, and hard shadows. Additionally, you can connect an optional fiber optic cable for an external strobe via the included attachment. The housing is also configured with a cold shoe for mounting accessories. A neck strap, wrist strap, and silicone grease are included.