No ozone smell. There's no ozone smell when germicidal lamp works. Convenient disinfection. You can smell the special smell when the bulb lights up. This smell is come from harmful burnt particulates by the UVC ray in the air. It's normal working phenomenon, just like the sunlight in summer. Big irradiation area up to 500sq ft, regular E27 base. Very easy to install. 254nm wavelength UV-C light, such as 30 times of the sun shine, powerful germicidal ability, can work for bed, room space, clothing, object surface. Type: UV Germicidal Lamp Voltage: AC 85~265V(worldwide fit) Power: 40W LED Type: 5736 SMD LED Beads Quantity: 130 Luminous: 1600LM Lifespan: 50000H Color Temperature: Ice blue Attentions 1. Please allow tiny size deviations due to human measurement. 2. Do not let your eyes and skin expose under the germicidal light when it is working! You must leave your room(include pets). And you also need to turn off the bulb before you approaching it. Ventilate for 15-30 minutes after disinfection. 3. If plants or fish tanks cannot move, cover them with opaque newspaper or cloth so that UV rays do not penetrate and harm them. 4. Before the germicidal lamp starts to work, you may smell a special burnt smell in the air. That's the smell of harmful combustion particles in the air. Please do not worry. size:125*46*46mm Material:aluminum colour:silver Package Contents: 1 * UV Germicidal Lamp Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.