Detailed Product Description 10V 3W Quartz UV Germicidal lamp ( Material: High Purity Quartz Glass (Ozone/Non-Ozone) Lamp diameter: 17mm Length (not including the pins): 52mm/64mm Base: E17 Peak: 253.7nm/253.7nm+185nm Average life time: 5, 000hrs Switch on-off: 20, 000 times UV density of 253.7nm: >30μW/cm2 (Distance=30cm)