COMPATIBLE WITH: COAST FLX25R and FLX27R Headlamps USB-C RECHARGEABLE: features a built-in USB-C port for easy charging CHARGE INDICATOR: An integrated LED indicator flashes red while charging and glows solid green when fully charged OVERCHARGE PROTECTION: Overcharge and discharge protection circuits ensure safe, reliable performance. LIFETIME WARRANTY: Backed by the COAST one-year warranty against defects in materials and workmanship.