Wattage:2.5 Watts A Cute Multi-purpose Lamp Will Be Never Superfluous! Multi-purpose It can stand on desk with its own anti-skid base just like common lamps or can clip almost anywhere and any angle with its anti-skid clip. Wireless and portable It can be powered by built-in battery so it’s wireless and portable. You can take it move around in your house or take it with you when travelling. Elegance design Flexible gooseneck tube to adjust its height and angle, 14 long life LED, ultra portable and lightweight (4.3 oz). Easy to use Touch-sensitive switch offers 3 brightness levels, recharges via USB to laptop/computer or outlet via recharges via adapter. Suitable for every place Can use in home, office, dorm, or travelling. Can use for reading book study piano bedside lamp and general desk table light. Reminder: 1. This item offer you a free power style rather than a specific power adapter. You can power it by pc, laptop, or any universal USB power adapter. 2. One of the design goals of this lamp is eye care / eye protection. So its light is designed soft and dimmable. Maybe some people may feel not bright enough.