Lightess Music Stand Light LED Clip on Book Lights Piano Reading Lamp USB Desk Lamp, Black Nine Super bright White LED with 10 million hours life time; Portable for Mixing, Orchestra, Work, Craft, Table, Travel and Desk. Flexible gooseneck allows for precise light adjustment; Padded clip provides stable attachment to music stand Two brightness level easily controlled by ON/OFF power switch; 3 Power Sources(AC + USB + Battery not included) Style: Clip-On Music Stand LED Light Nine Super bright White LED with 10 million hours life time; Portable for Mixing, Orchestra, Work, Craft, Table, Travel and Desk. Two brightness level easily controled by power switch. Flexible gooseneck allows for precise light adjustment; Padded clip provides stable attachment to music stand <span class="a-text-bold">Can be Powered By:</span><br> - 3 x AA Batteries (Not Include) Or<br> - AC Adapter (110-240V) Or<br> - USB (like AC+USB or Laptop USB Port...) <span class="a-text-bold">Package Includes:</span><br> -1 x Music Stand LED Light<br> -1 x USB Port AC adapter<br> -1 x USB Charge Cable