Detailed Product Description They provide more than twice the amount of light of halogens bulbs and are available in colours from crisp white, to deep blue and purple. Output wattage(W): 35.0 Watts/50 Watts Start voltage (V): 23KV Color temperature(K): 3000k,4200K,5000K,6000K,10000K,12000K Luminous (LM): 3000 -/+ 200LM Lifetime (H): Over 3000 Hours