Welcome to Lenoviva technology co.， LTD store Wholesale Unique USB Dual Arm 4 LED Book Light Lamp Flexible Book Music Stand Clip On For E-book Reading Features: Hight Quality Dual Arm4 LED Music Stand Light. Fully adjustable lamp with dual flexible goosenecks. Total4Super LED lights with separate switches. ( Press Switch once， 1 LED lights on，twice 2 LED lights on，three times both 2 lights out.) Easy to use with Clip-on or freestanding. Lowe power consumption and long battery life Coils for compact storage. Powered by 3 AAA Batteries (Not included) or a USB Power Cable (Included). Ideal for pianos， music stands， orchestra pits， schools， dark clubs. Package Included: 1 x Dual Arm 4 LED Music Stand Light Lamp 1 x USB Power Cable