The COAST HL77R brings rechargeable capabilities to a high-performing headlamp, perfect for the professional user. The HL77R is designed to put high quality, bright light anywhere it's needed throughCOAST's Patented Pure Beam optic system and Twist Focus technology allowing to easily transition from a wide-angle Ultra-View Flood Beam to a more precise Bulls-Eye Spot Beam for up-close work. This multi-dimension headlamp features high - and - low light outputs, as well as a solid red, LED for safety/visibility and to prevent night blindness. The HL77R is one of COAST's RECHARGEABLE DUAL POWERproducts that provides the user the convenience and cost savings of a COAST ZITHION-X rechargeable battery pack AND the convenience of (3 x AAA) alkaline batteries so you are never without your light. The rechargeable battery pack can be charged on or off the headlamp using a micro USB cable. The HL77R has a maximum light output of500 lumens, for a total run time of 33hrs on low.With COAST's commitment to quality, the HL77R is dustproof and weatherproof and backed by COAST's lifetime warranty guarantee against defects in materials and workmanship. Tested and rated to ANSI/FL1 standards.