Features: ?Sensitive touch control switch. Built-in rechargeable battery makes it a cordless portable desk table light. ?Dimmable lamp with smooth and glossy white light meets various demands of different environments. ?Gooseneck easy folding design enables adjustable height and angle for best directing of light. ?Very stylish and portable design for home， bedroom，office， travelling，reading，piano，etc，. ?Can be hung and attached by Magnet or hook hole. Specification: Voltage: USB 5V Wattage: 2.5��0.5W Built-in Battery Capacity: 600mAh Material: Plastic Lamp Charging Time:5hrs Instruction: A simply touch on the control panel to turn on the max brightness， another touch to turn it off. Touch and hold the contol panel to adjust till the most fittest brightness for you. Reminder: 1. It is not a quality problem if this lamp is not bright enough when you receive it. Plz power it by pc， laptop， or any universal USB power adapter for 8-12 hours for the initial use. 2. When you hung and attach the lamp by Magnet， be noted that the side with Magnet must be on the up side. 3.Package includes only the LED desk lamp， cable， and user manual.package1x lamp