OS Details

LG Watch Sport has been launched in February 2017.
LG Watch Sport have Android Wear 2.0, upgradable to 2.1

Screen Dimensions

LG Watch Sport screen size is 1.38 inch with ~ 52.8% body ratio of actual device size. Physical dimensions for LG Watch Sport device is 1.79 x 2.02 x 0.56 INCH or ( 45.4 x 51.2 x 14.2 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.

LG Watch Sport resolution is 480 x 480 ^PX with ~ 348 pixel desnsity.
LG Watch Sport viewport size is 240 x 240 ^PX with ~ 174 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".

LG Watch Sport have 1.38" physical screen size and its resolution is about 480 x 480 Pixels with approximately 348 PPI pixel density. LG Watch Sport has viewport size 240 x 240 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

LG Watch Sport Media Queries

@media only screen and (min-width: 240px) and (max-width: 319px) { /* Your Styles... */ }

LG Watch Sport Min-Width Media Queries

@media only screen and (min-width: 240px) { /* Your Styles... */ }

LG Watch Sport Min-Height Media Queries

@media only screen and (min-height: 240px) { /* Your Styles... */ }

LG Watch Sport Min-Width Media Queries

@media only screen and (max-width: 240px) { /* 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 */
}
                                

LG Watch Sport Specifications

• Launch Date February 2017
• Android Wear 2.0
• Physical Screen Size 1.38 INCH
• Resolution 480 x 480 PX
• Viewport Size 240 x 240 PX
• Pixel Density 348 PPI
• Device-Independent Pixels 174 PPI
• Pixel Ratio 2 xhdpi
• Width 480 PX
• Height 480 PX
• Device Width 240 PX
• Device Height 240 PX
• Dimensions 45.4 x 51.2 x 14.2 mm (1.79 x 2.02 x 0.56 in)
• Weight - g - - oz