This 38.5mm newer Zenith El Primero chronograph is amongst the finest movements Zenith produces. The original full-length 18k solid-gold and steel bracelet is included. The blue turning bezel is 18k gold. No box or papers are included with this watch. The entire watch is extremely clean. The El Primero automatic movement is accurate and working flawlessly. This is a high-quality in-house-produced chronograph.