The Core from Petzl extends the inner core of the compact headlamps Tikkina, Tikka, Zipka, Actik, Actik Core, Tactikka, Tactikka+ and Tactikka +RGB. The 1250 mAh lithium-ion battery delivers high light output even in cold conditions. Charging takes place directly via the integrated USB port, making it a cost-effective and sustainable power source for on the go.