Led Lenser HF8R Core This head torch is the adaptive power pack for all occasions. The Light Beam technology enables automatic dimming and focussing. The HF8R Core can be controlled remotely via the Ledlenser Connect app. Waterproof for permanent submersion (IP68). Maximum light output: 1,600 lm. Light duration: max. 90 hours at 20 lm. Max. light range: 210 m. Incl. 1 Li-ion rechargeable battery.