3D Model: A Compact, Modern Sci-fi Handheld Cartridge Device, Designed Like A Rectangular Tech Module Slightly Thicker Than A Smartphone. It Has A Clean Matte Black Plastic And Brushed Steel Casing With Subtle Glowing Lines (cyan Or Green). One Side Features A Soft Glowing Interface Screen Or Button Panel, The Top Has A Visible Connection Ridge Or Plug For Slotting Into Terminals. Designed For High-tech Industrial Use — Rugged But Not Overly Futuristic. Visible Text Reads 'M.E.C.A.L.L.' And A Small Label: 'Multiple Environment Cartridge'. Minimal Logos, Soft Wear Scratches, Compact Grip-friendly Design Has Two Plugs And Low Poly.