OS Details

Huawei Watch Magic has been launched in November 2018.
Huawei Watch Magic have

Screen Dimensions

Huawei Watch Magic screen size is 1.2 inch with ~ 50.5% body ratio of actual device size. Physical dimensions for Huawei Watch Magic device is 1.69 x 1.69 x 0.39 INCH or ( 42.8 x 42.8 x 9.8 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.

Huawei Watch Magic resolution is 390 x 390 ^PX with ~ 326 pixel desnsity.
Huawei Watch Magic viewport size is 195 x 195 ^PX with ~ 163 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".

Huawei Watch Magic have 1.2" physical screen size and its resolution is about 390 x 390 Pixels with approximately 326 PPI pixel density. Huawei Watch Magic has viewport size 195 x 195 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

Huawei Watch Magic Media Queries

@media only screen and (min-width: 195px) and (max-width: 319px) { /* Your Styles... */ }

Huawei Watch Magic Min-Width Media Queries

@media only screen and (min-width: 195px) { /* Your Styles... */ }

Huawei Watch Magic Min-Height Media Queries

@media only screen and (min-height: 195px) { /* Your Styles... */ }

Huawei Watch Magic Min-Width Media Queries

@media only screen and (max-width: 195px) { /* 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 */
}
                                

Huawei Watch Magic Specifications

• Launch Date November 2018
• Physical Screen Size 1.2 INCH
• Resolution 390 x 390 PX
• Viewport Size 195 x 195 PX
• Pixel Density 326 PPI
• Device-Independent Pixels 163 PPI
• Pixel Ratio 2 xhdpi
• Width 390 PX
• Height 390 PX
• Device Width 195 PX
• Device Height 195 PX
• Dimensions 42.8 x 42.8 x 9.8 mm (1.69 x 1.69 x 0.39 in)
• Weight 32.5 g - 1.16 oz