What Is El Cronómetro A1? El Cronómetro A1 is a specialized preparation manual designed for the DELE A1 exam (Diploma de Español como Lengua Extranjera), officially issued by the Instituto Cervantes on behalf of the Spanish Ministry of Education. The book is part of the renowned El Cronómetro collection by Editorial Edinumen, known for its realistic exam simulations and time-focused training.