3 Color Temperature Changes & Stepless Dimming: The rechargeable bulb has 3 light color options (cool white/daylight/warm white) and a stepless dimming function. You can choose the perfect shade to set the right mood for any occasion. 500 Lumen Brightness with Ultra-High Capacity Battery: The extra large 5000mAh bulb features a powerful 7W LED (equivalent to a 40W incandescent lamp), while the E26 socket only provides up to 1W of brightness for improved visibility. The large 5000mAh battery allows the 7W ultra bright bulb to work for 12-30 hours (the duration depends on the brightness of the bulb). Remote Control + Touch Control: Effortlessly control your bulbs wirelessly with our included remote controls or by simply touching the bulbs. Enjoy the comfort and ease of use. With 4-Level Timer: Save on your electricity bill by using the built-in timer function. Set the timer to 15 minutes, 30 minutes, 60 minutes, 120 minutes and let the rechargeable bulbs with remote control turn off