This round alabaster lamp offers three lighting options, and by pressing the button on the base, you can adjust the light intensity to suit your needs and preferences. The lamp is rechargeable via a USB port, making it practical and easy to use anywhere with access to a power source. The battery takes about 2.5 hours to fully charge. Battery life: 4-6 hours with high light 12-16 hours with low light 16.5 hours in flashing mode