SOS strobe. Water resistant. Impact resistant. Rechargeable. CREE XM-L2 U2 LED. High CRI white light and red light. 110m beam distance. 1000 max lumens. Constant circuit runs for maximum 800 hours. Intelligent memory function. Seven brightness levels and four specialty modes. Micro USB rechargeable. Fully adjustable nylon head band. Requires (1) 18650 battery (included). Boxed with hanging tab.