High-quality, professional, chrome-plated, pneumatic trumpet with compressor, adapted for 12V installations. TRUMPET: total length: 45 cm outlet diameter: 9 cm dimensions of the larger base: 4.2 x 3.9 cm dimensions of the smaller base: 3.9 x 2.5 cm COMPRESSOR: total length: 11 cm diameter at the smaller end: 4.8 cm diameter at the larger end: 6 cm HOSE - PRESSURE HOSE: length: approx. 37 cm outer diameter: approx. 11 mm inner diameter: approx. 6 mm OTHER: supply voltage: 12V number of tones: 1 volume up to 150 DB