The product you're looking for is a common household item, a Non-Electric Whistling Stovetop Kettle with a large capacity.1

This type of kettle is a practical, traditional way to boil water without electricity, and the "Silver" color usually indicates a stainless steel or metallic finish.2

Here are the typical features and details for a 4-liter non-electric whistling kettle:

Key Features and DetailsFeatureDetailsCapacity4 Liters (4L) (A large capacity, great for serving multiple people or a big family).TypeNon-Electric Stovetop Kettle (Boils water directly on a heat source like a stove).Whistling FunctionA spout cap that creates a loud, clear whistle to alert you when the water has reached a full boil.MaterialTypically made from durable, food-grade Stainless Steel with a silver/metallic finish.Hob CompatibilityGenerally compatible with all stovetop types, including Gas, Electric, Ceramic, and often Induction cookers.BaseOften features a thick, multi-layer, or capsulated base (sometimes tri-ply or 5-layer) for rapid boiling and even heat distribution.HandleFeatures a heat-resistant, anti-scalding, or cool-touch handle (often Bakelite) for safe and comfortable pouring.Lid/SpoutDesigned with an easy-to-use lid and a flip-up spout cover for safe filling and pouring.UseIdeal for daily kitchen use, large gatherings, and especially useful for outdoor cooking, camping, or during power outages (load shedding).