Apple Watch 3 38mm viewport size, resolution, PPI, screen specs and CSS media queries | YesViz

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OS Details

Apple Watch Series 3 (38mm) has been launched in
September 2017.
Apple Watch Series 3 (38mm) have
watchOS 4.0, upgradable to 5.0

Screen Dimensions

Apple Watch Series 3 (38mm) screen size is 1.5 inch with ~
55.1% body ratio of actual device size. Physical dimensions for
Apple Watch Series 3 (38mm) device is
1.52 x 1.31 x 0.45 INCH or (
38.6 x 33.3 x 11.4 MM).

Displaying of Units are in this order “Height x Width x Thickness”

Screen Pixel Density and CSS Pixel Ratio

“Pixel” is smallest unit/element of any display.

The total number of pixels that fit into an inch is referred to as “Screen Density” or “Pixel Density” and it measured as “Pixels Per Inch”.

Pixel Desnsity have limits to display Pixels Per Inch depends on different screen sizes. When number of pixels per inch increases than it’s screen-size limit, the Display resolution will increase but actual device width/height in pixels remain same. Actual device pixels are known as Device Independent Pixels or CSS Pixel Ratio.

Apple Watch Series 3 (38mm) resolution is 340 x 272 PX with ~ 290 pixel desnsity.
Apple Watch Series 3 (38mm) viewport size is 170 x 136 PX with ~ 145 actual pixel density, which means it have 2 xhdpi display pixel density.

Screen Resolution and Viewport

The sum of pixels which are displaying on a device is called as “Screen Resolution”. and sum of actual pixels of any device is reffered to as “Viewport”.

Apple Watch Series 3 (38mm) have
1.5″ physical screen size and its resolution is about 340 x 272 Pixels with approximately 290 PPI pixel density.
Apple Watch Series 3 (38mm) has viewport size 170 x 136 Pixels and its pixel ratio is about 2.

For better understanding screen actual sizes, viewport sizes, display resolution and about their density click here.

CSS Media Queries

Apple Watch Series 3 (38mm) Media Queries

@media only screen and (min-width: 170px) and (max-width: 319px) { /* Your Styles... */ }

Apple Watch Series 3 (38mm) Min-Width Media Queries

@media only screen and (min-width: 170px) { /* Your Styles... */ }

Apple Watch Series 3 (38mm) Min-Height Media Queries

@media only screen and (min-height: 136px) { /* Your Styles... */ }

Apple Watch Series 3 (38mm) Min-Width Media Queries

@media only screen and (max-width: 170px) { /* Your Styles... */ }

General Media Queries for Smart Watches

@media only screen and (max-width: 319px) { /* Your Styles... */ }

In current era smart watches have no viewport size greater than 319px. So 319px is choose as max-width, also it will not disturb your styles for any kind of mobiles.

Retina 2x Media Query for Smart Watches

@media
  only screen and (-webkit-min-device-pixel-ratio: 2),
  only screen and (   min--moz-device-pixel-ratio: 2),
  only screen and (     -o-min-device-pixel-ratio: 2/1),
  only screen and (        min-device-pixel-ratio: 2),
  only screen and (                min-resolution: 192dpi),
  only screen and (                min-resolution: 2dppx) { 
    /* Retina styles here */
}

Apple Watch Series 3 (38mm) Specifications

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