004 is an ashtray that can only be used by one person. It is designed with the concept of 'Solitude', inspired by a cassette recorder by Sony in 1978. Solitude is a voluntary act that holds independent meaning, distinctly separate from loneliness or isolation. For some, it is a time of recovery, self-reflection, and growth. This is because solitude is complete alone time, and all thoughts and emotions that come from it can only be felt and experienced by oneself.
