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Hello! I've reviewed the user manual for the USB Lamp 20138-015-71. It details the lamp's features, including multiple lighting modes, brightness adjustment, a timer function, mobile phone holder, a USB charging socket, and adjustable angles. It also includes important safety information about bulb replacement. I am ready to answer any questions you have about the lamp.
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What should I do before changing the bulb?
What is the purpose of the USB Socket?
What modes are available?