Equipped USB charger port, supports charging for smart phones, or other mobile devices. It will continue to charge when lamp was turned off Creates a feeling, recessed LED beam casts no glare no flicker lights, easy on eyes and help to see well Replace RV boat old halogen incandescent with LED lights, save automotive battery and provides high efficiency LED lighting Simply tap lamp base switch to adjust brightness from bright lights for reading to low lights as ambient light. switch has brightness memory function The pan and title lamp head allows 350° horizontal rotation and 90° vertical tilt to adjust to different lay or east posture for reading comfortable