The light arms are made of high-quality metal alloy material, offering excellent flexibility and hardness. They can be positioned in any direction and adjusted to the desired angle and shape, providing versatile lighting options from multiple angles.Multiple Power Supply Modes: These reading lights support multiple power sources, including AAA batteries or USB cable connection. When connected to a DC power source, the device automatically switches to external power and cuts off battery supply without requiring battery removal. Upon disconnecting from the power source, the battery resumes operation with a simple button press. Batteries (three AAA, not included) are required for battery-powered use.Meets Multiple Lighting Needs: The LED lights on these clip-on reading lamps deliver brightness equivalent to three standard LEDs. Independent switches on each arm allow various lighting combinations: one arm on, both arms on, one side only, or all lights on both arms. The design provides flicker-free, shadow-free, and glare-free illumination ideal for reading, meeting diverse user needs.Adjustable Clips: Featuring adjustable clamps that securely grip objects of varying thicknesses. A small rotating component at the clip tail enables independent movement, expanding the range of compatible surfaces and ensuring a firm hold.Wide Range of Applications: These rechargeable book lights are ideal for use on music stands, during piano performances, orchestra rehearsals, reading in bed, working at a desk, computer use, knitting, sewing, crafting, and more. Compact and portable, they are convenient for travel and everyday use.Color: Black Material: ABS + Metal Package Contents: 2 x Music Stand Lamps Note: Lighting conditions and display settings may cause slight variations between the color shown in images and the actual product. Measurement tolerances may apply.