1)time extended to 2000 hours2)Frosted glass3)UV-stop version,featuring the use of special quartz glass to stop the emission of UV raysType:JCD-45: Volts:110-120v 220-240v Watts:20 35 50wJCD-54: Volts:110-120v 220-240v Watts:75 100 150JCD-62: Volts:110-120v 220-240v Watts:200 250w