Feature: 1. Core technology og lighting: Smaller luminous surface distance, more focus and better pattern luminous surface distance only about 2mm. 2. Luminous efficiency: much brighter than same body design led bulbs with other type led chips. 3. Work under any harsh conditions: waterproof & dustproof & weatherproof 4. Comparison with hologen bulb: almost same light source arrangement with halogen bulbs. 5. Hight cooling effective system: over 30000 hours longer lifespan