Adjustable Clips: The rechargeable night lights feature adjustable clips that grip objects of different thicknesses. A small part on the clip tail can rotate independently, increasing the clamping range and ensuring clips stay firmly in place on items. Flexible, durable light arms: The light arms are made from metal alloy for strength and flexibility. They can be set in any position and adjusted to the required angle and shape, offering full range and multi angle lighting. Multiple power supply modes: The book lights can be powered by AAA batteries or USB. When connected to a DC plug, the power supply can be used directly and the battery power is automatically cut off without removing the battery. When unplugged, the unit runs on battery power with a simple button press to turn on. Batteries are not included; requires three AAA batteries. Brightness and lighting options: The LED lights attached to the battery operated clip on lights are as bright as three standard LEDs. The switches on the dual arms support four configurations: one arm on, both arms on, two LEDs on a single arm, or all LEDs on both arms. No flicker, shadow, or glare, designed for comfortable reading. Practical uses: Clip the light to the edge of a book for nighttime reading in bed, attach to a desk, headboard, shelf, or workbench for hands lighting, or use for crafts, sewing, studying, or repairs where directed light is needed.