Connectivity via Bluetooth Low Energy. Range up to 20 meters. Theme Light can be turned ON or OFF using dedicated button on Main Screen. Light Color can be changed using fixed button or Color selector Slider. Light Intensity can be controlled using the Intensity Slider on Main Screen. Attractive 4 effects can be selected with Effect Button. Flash Effect - Light gives a flashing effect with user selectable color and speed. Pulse Effect - Light gives a pulsing effect with user selectable color and speed. Rainbow Effect - Rainbow colors changing with user selectable speed. Rainbow Fade - Fading of rainbow colors.