Surface treatment process: wire drawing, anodic oxidation. External size: 227*271*70mm. Internal size: 186*260*62mm. Radiator size: 260*62*20mm. Front panel is 8mm, rear panel is 3mm, upper and lower cover is 3mm. Accessories: Version 1: rubber feet, power socket, screws. Version 2: rubber feet, power socket, screws, RCA, terminals. Net weight: 2.3kg. Weight after packing: 3.0kg.