Use custom font.

src/main.c

@@ -2,7 +2,6 @@
 #include "main.h"
 
 #define TIME_TEMPLATE "00:00"
-
 #define FONT_SECONDS FONT_KEY_BITHAM_30_BLACK
 #define FONT_MINUTES FONT_KEY_BITHAM_42_BOLD
 
@@ -36,20 +35,26 @@ static void tick_handler(struct tm *tick_time, TimeUnits units_changed) {
 
 static void main_window_load(Window *window) {
   // Create time TextLayer
-  s_time_layer = text_layer_create(GRect(0, 55, 144, 50));
+  s_time_layer = text_layer_create(GRect(5, 52, 139, 50));
+
+  // Create GFont
+  s_time_font = fonts_load_custom_font(resource_get_handle(RESOURCE_ID_FONT_PERFECT_DOS_48));
+
   text_layer_set_background_color(s_time_layer, GColorClear);
   text_layer_set_text_color(s_time_layer, GColorBlack);
   text_layer_set_text(s_time_layer, TIME_TEMPLATE);
 
   // Improve the layout to be more like a watch face
-  text_layer_set_font(s_time_layer, fonts_get_system_font(FONT_MINUTES));
+  // Apply to TextLayer
+  text_layer_set_font(s_time_layer, s_time_font);
   text_layer_set_text_alignment(s_time_layer, GTextAlignmentCenter);
 
   // Add it as a child later to the Window's root layer
   layer_add_child(window_get_root_layer(window), text_layer_get_layer(s_time_layer));
 }
 
 static void main_window_unload(Window *window) {
+  fonts_unload_custom_font(s_time_font);
   text_layer_destroy(s_time_layer);
 }