Each Bell & Ross chronograph is designed by men with a passion for perfection in the manufacture of fine quality watches and chronographs able to withstand the rigors of extreme careers. Bell & Ross watches are intended for astronauts, pilots, divers, bomb-squad experts, explorers and others who require that their timepiece stand up to high altitudes, arctic temperatures and high acceleration. Airplane instrument panel design principles have been employed in the design of the face, Swiss chronograph movements are at the cutting edge of mechanical precision and every Bell & Ross chronograph is optimally water-resistant. Each Bell & Ross requires the painstaking assembly of up to 350 individual parts to produce such accurate and mechanically perfect instruments.