# Important Numbers

## Display
^                | **Cinema Display**  |  **MBPR 15'' Retina 220 pixel/inch**                            |||||
| Scale          | @1x             | @2.81x                            | @2.25x    | @2x       | @1.71x     | @1.5x      |
| Effective DPI  | 101             | 78.2                              | 97.8      | 110       | 128        | 165        |
| Resolution     | 2560×1600       | 1024×640                          | 1280×800  | 1440×900  | 1680×1050  | 1920×1200  |


 - **iPhone 12** 460 dpi 2532×1170 effectively 1266×585
 - **iPhone 12 mini** 476 dpi 2340×1080 effectively 1170×540
 - **iPhone SE** 326 dpi 640×1136 99.31% sRGB
 - **iPad mini 5** 326 dpi 2048×1536   DCI-P3
 - **MBPR 2013** 220 dpi 2880×1800  = ~77% of AdobeRGB
    and 112% of sRGB
 - **MBP 2011**  113 dpi  1280×800
 - **iPod classic**  163 dpi
 - **iPod nano 5th** 201 dpi
 - **Cinema Display 30' late 2004** 101 dpi 2560×1600 72% AdobeRGB
 - **IODATA Display** 93 dpi 1920×1080 ?

## Shoes Size

- **New Balance** 996: 25.0 cm
- **Red Wing**: 7D 25.0 cm too large
- **Onitsuka Tiger**: 26.0 cm

## Clothes Size

- **Uniqo**: 
  - Sweater M is slightly small. 
  - Leisure shirt M is slightly large.
  - Underwear M is good

- **九牧王**:
  - 裤子腰围 78