No Standalone lithium batteries are sold with the product 180 lumens; runs 4.5 hours and on low: 35 lumens; runs 21 hours Lightweight and slim profile headlamp; Clip it to brim of cap with included visor clip Smooth and diffused light is ideal for reading and other close-range tasks USB rechargeable, recharges in about 3.5 hours;Low battery indicator: light will blink when with 5 minutes of runtime left