ADJUSTABLE FOCUS & TWO MODES 2 Light Settings (High Low); Sliding head allows for fast light beam focus; slide head forward or backward to focus the powerful LED beam to its desired range; ideal for use around the house, walking, hiking, camping, emergency, auto TWO LUMENS SETTINGS You can choose 500 or 170 lumens; the light has a run time of up to 9 hours 45 minutes at low lumens setting; high beam light range upto 170 meter or 186 yards