The WT25R, with its adjustable head and magnetic base, is a perfect light for the professional that needs a quality, flexible light for work or play. It is powered by either a single 18650 battery (included) that can be charged with the included magnetic USB recharging cable or with two non-rechargeable CR123A batteries (not included). It provides 1000 lumens at full power and has multiple modes and settings so you can control the brightness and runtime to match the task. Durable and built to last, it&';s the perfect addition for any professional.