Keystone Technologies GU10 MR16 Bulb, 5 Watt, 350 Lumens, 80+ CRI, Dimmable, Bi-Pin GU10 Base, Energy Star Rated, 120V

This GU10 MR16 Bulb is a powerful lighting solution that will brighten up any space with its 500 lumens of light output. Whether you're looking to replace small halogen bulbs or want to use it in new construction applications, this bulb is the perfect choice.

Unlike traditional halogen spotlights that emit a significant amount of heat and require extra protection against shattering in open fixtures, this GU10 MR16 light bulb offers a safer and more efficient alternative. With its lower heat generation, you can use it confidently in both open and recessed fixtures without any additional precautions.

Featuring a 5-watt energy-efficient LED lamp, this GU10 MR16 bulb combines functionality with eco-friendliness. It provides bright illumination while conserving energy and reducing electricity costs. Its dimmable feature allows you to adjust the brightness according to your needs, creating the perfect ambiance for any occasion.

The GU10 base ensures easy installation and compatibility with a variety of household fixtures. With a lifespan of 15,000 rated hours, this bulb is built to last, providing years of reliable lighting. Backed by a 3-year warranty, you can trust in the quality and durability of this Keystone Technologies product.

• 500 lumens of bright light output
• Lower heat generation than traditional halogen bulbs

• Brand: Keystone Technologies
• Wattage: 5 Watts
• Input Voltage: 120V
• Lumens: 350
• Lamp Type: LED
• Color Temperature: 2700K, 3000K, 4000K, 5000K
• CRI: 80+
• Dimmable: Yes
• Base: GU10
• Certifications: cULus Listed, Energy Star Rated
• Dimensions: 1.97"D x 2.19"H
• Rated Hours: 15,000
• Warranty: 3 Years

We offer free shipping on all orders within the United States—no hidden fees or charges at checkout. International shipping is available, with rates calculated based on weight and quantity at the time of purchase.

Most orders ship within 1–3 business days, though some items are built to order and may have longer lead times. Orders may ship from multiple locations depending on the brands ordered, and tracking information will be provided for each shipment.

For more details, please visit our Shipping Policy or contact our customer service team for assistance.

We offer a 60-day return policy for eligible items. Products must be unused, in their original packaging, and include proof of purchase.

To start a return, you can use our self-service portal or email customerservice@starsandstripeslighting.com. If approved, we’ll provide a return shipping label and instructions. Returns sent without prior approval will not be accepted.

If your item is damaged, defective, or incorrect, please contact us immediately so we can make it right.

Some items—like custom orders and gift cards—are non-returnable.

To exchange a product, simply return the original item and place a new order once the return is approved.

For EU customers, a 14-day cooling-off period applies under EU law.

Refunds are issued to your original payment method within 10 business days of approval. If it's been more than 15 business days, please contact us for assistance.

For full details, visit our Return Policy.