Dimensions: 56.8 cm x 2.3 cm x 1.9 cm Eye-Protecting Reading Lamp: This reading lamp uses advanced anti-glare LED beads to provide maximum protection for your eyes while reading. The soft light won't disturb a sleeping partner. Note: After receiving the reading lamp, fully charge it before use to prevent the battery from draining during shipping. 3 Brightness Levels and 9 LEDs: This USB rechargeable lamp features 3 color temperatures: warm light (3000K), natural light (4500K), and cool white light (6000K), and 3 brightness levels. A short press allows you to freely adjust the brightness (20%-100%), making it easily adaptable for various occasions as a reading lamp. 360° Flexible Arm: This hanging neck lamp is made of soft TPE, which is skin-friendly and comfortable to wear. It doesn't slip easily during use. The integrated metal tube allows you to bend it 360° to the desired position. Each side of our bed reading light has individually adjustable power settings; with just 3 clicks, you can adjust the brightness. Long battery life and USB rechargeable: The rechargeable book reading light has a built-in lithium battery that only takes 2 hours to fully recharge and provides up to 5 to 30 hours of illumination, so you don't have to worry about rapid power consumption. The included micro USB charging cable allows you to recharge it anytime via a computer, wall charger, or power bank. Portable and versatile: This LED neck light weighs only 140 grams, is small and lightweight, and can be easily folded and placed in a backpack. The neck reading light is very suitable for reading in bed, in the car, or traveling at night. It is also suitable for sewing, knitting, or even outdoor activities such as travel, camping, night jogging, etc.