The Panasonic SDR-SW20 is a rugged, pocket-sized SD-card camcorder from Panasonic's waterproof camcorder range, launched in the late 2000s as a compact video camera for outdoor and holiday use where a conventional camcorder would be at risk.
It records video directly to SD/SDHC memory cards, uses a small built-in lens and CCD sensor typical of Panasonic's compact camcorders of the period, and has a small flip-out LCD screen for framing and playback, housed in a waterproof and shockproof body designed to survive splashes, rain and drops.
Its rugged sealed body distinguishes it from mainstream Panasonic camcorders of the same era, trading video resolution and manual control for durability, making it more a tough point-and-shoot video companion than an editing-ready camcorder.
On the used market these sell cheaply as novelty or backup camcorders; buyers should check the waterproof door seal and gasket for wear, confirm the SD card slot and USB/AV ports work, and test the battery's remaining runtime, since seal degradation is the main risk on older units.