The Coolpix S4 is a brand of digital camera produced by Nikon.

It has a 2.5-inch (64 mm) thin-film transistor liquid crystal display device with 110,000 pixels.

The S4 incorporates Nikon's popular swivel design which allows the addition of a powerful Nikkor 10X Optical zoom lens, yet retain a compact form.

Nikon later released the Nikon Coolpix S10, which has a similar 10x swivel lens design as the S4, but with more advanced features such as vibration reduction and a lithium-ion battery.

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