1, [EXCELLENT PERFORMANCE]: High brightness 300 lumen, 2800K bright warm white, CRI100. Our g4 bulb 12v bring you warm lighting conditions like sunlight. The CRI up to 100 can restore the real color of the object, g4 halogen bulbs making the place where the light touches looks more colorful. 2, [HIGH QUALITY AND DURABLE]: CE and RoHS Compliant. The lifespan of these halogen g4 12v 20w is over 3000 hours, they can be switched on and off up to 15000 times. Our g4 light bulb all meet strict test standards, including flicker, glare and color reproduction, which will protect your eyes. 3, [G4 DIMMABLE100 percent -10 percent ]:G4 halogen bulb 20w, compatible with most dimmers. Control the brightness of your table lamps or home lighting with the ability to Dimming from 10 percent -100 percent lighting output. Set your g4 capsule bulb according to your mood and take delight in a pleasant atmosphere every time. 4, [EASY INSTALLATION]: Diameter: 0.31” (0.8cm), Length: 1.18” (3.0cm), Base: G4 bi pin (4mm or 0.16” apart), 0.7mm Diameter (updated), G4 20w 12v with standard G4 bi pin base, Easy and quick to install without trouble, good compatibility. You just need to insert this g4 halogen light bulb into the Empty Sockets. Instand on, 360°beam angle. 5, [YOUR SATISFACTION IS OUR PRIORITY]: Seller 90-Day Warranty, CE and RoHS Compliant. If any problems with g4 dimmable warm white, please feel free to CONTACT US at any time. Our professional after-sales team will make things right within 24hrs. Buy this JC G4 12v 20w halogen bulb with confidence!