Every Boolye headlamp features:
Very tight beam of light that reaches far (see pictures and photos to compare models)
Adjustable head band for comfort
Lithium battery for high capacity and easy recharging
 
300 Lumen Headlamp:
A lot of light in the smallest package.
LCD display with backlight
Shows battery power reserve in hours and percent
Runs 13+ hours on high brightness, 20 hours on low
Two USB charger cords included
LED bulb service life: 100,000 hours
Weighs only 3 ounces
 
500 Lumen Headlamp:
Runs 9 hours on high brightness, 14 hours on medium
1 wall charger
Blue and orange color filter
 
2000 Lumen Headlamp:
Runs 10 hours on high brightness, 20 hours on medium, 30 hours on low
2 x USB cords and USB wall charger