I've found a definition of what the settings.h file should look like on a GitHub Watchy Page
#ifndef SETTINGS_H
#define SETTINGS_H
//Weather Settings
#define CITY_ID "5368361" //Los Angeles https://openweathermap.org/current#cityid
#define OPENWEATHERMAP_APIKEY "f058fe1cad2afe8e2ddc5d063a64cecb" //use your own API key :)
#define OPENWEATHERMAP_URL "http://api.openweathermap.org/data/2.5/weather?id=" //open weather api
#define TEMP_UNIT "metric" //metric = Celsius , imperial = Fahrenheit
#define TEMP_LANG "en"
#define WEATHER_UPDATE_INTERVAL 30 //must be greater than 5, measured in minutes
//NTP Settings
#define NTP_SERVER "pool.ntp.org"
#define GMT_OFFSET_SEC 3600 * -7 //Los Angeles is UTC -7
#define DST_OFFSET_SEC 3600
watchySettings settings{
CITY_ID,
OPENWEATHERMAP_APIKEY,
OPENWEATHERMAP_URL,
TEMP_UNIT,
TEMP_LANG,
WEATHER_UPDATE_INTERVAL,
NTP_SERVER,
GMT_OFFSET_SEC,
DST_OFFSET_SEC
};
#endif