Flexi LED Lighting System Ultra-bright LED front light with a separate red rear light Easy attachment using the included velcro fastener, designed for all retractable leashes in the Flexi VARIO and Flexi New Classic lines (sizes S to L) Can be attached on either side of the housing (for right or left-handed users) Splash-proof Comes with 2 AAA batteries and a decorative cover (to predict the velcro fastener closure when lamp is not in use) After gluing on the velcro fastener ring, please wait 12 hours before using the LED Lighting System.