Product Specifications

MODEL NAME	ITEM	VOLTAGE	WATTAGE	BASE	CERT
B10121000	H10W	12V	10W	BA9s	E4

I. Origin & Specialized Purpose
The H10W is a professional-grade bulb type born to tackle severe weather conditions. Its original design purpose is to provide powerful auxiliary lighting with exceptional penetration in low-visibility environments such as rain, fog, snow, and dust. It is not intended for general road illumination but serves as the core light source for dedicated fog lamps. The “W” in its name signifies its higher wattage, engineered to produce a concentrated, warm yellow light with an optimal spectrum. This effectively cuts through suspended particles in adverse weather, illuminating the road surface close ahead and ensuring the safe boundary of the driving path is clearly visible.

II. Core Advantages

1. Superior Adverse-Weather Penetration: Employs a specific warm yellow color temperature (typically around 3000K). Compared to white light, its longer wavelength scatters less in rain and fog, allowing it to penetrate mediums more effectively and significantly improve the driver’s ability to identify road edges and obstacles.

2. Professional Beam Control: Works in precise conjunction with fog lamp reflectors to produce a wide, flat, non-glare beam with a sharp cut-off. It primarily illuminates the area immediately in front and to the sides of the vehicle, avoiding the creation of a blinding “light wall” in front or causing glare for oncoming drivers—safety is paramount.

3. Robust Environmental Durability: The bulb construction is reinforced for the harsh conditions fog lights may face, such as water/mud splashes and rapid temperature changes, ensuring stable and reliable performance in damp and high-vibration environments.

III. Product Features

• High-Wattage Output Design: Typically rated at 10W, it delivers sufficient luminous flux specifically engineered to penetrate  weather, making it the professional choice for foggy conditions.

• Weather-Resistant Reinforced Structure: The bulb utilizes impact-resistant quartz glass, and the base seal is optimized to resist moisture and dust ingress, extending service life in humid conditions.

• Plug-and-Play Professional Upgrade: Fully compliant with OEM fog light specifications. It directly replaces old or underperforming original fog light bulbs, requiring no wiring modifications, and instantly enhances lighting safety in poor weather.

Compatibility: Specifically designed for front fog lamps across various vehicle makes and models. Please double-check that your vehicle’s fog light specification is H10W (some models may use H11, H8, etc., which have different bases and are not interchangeable).