NightRider Lumia 550 Headlight Run Time: 1:30 HR High - 500 lumens; 3:00 HR Med - 250 lumens; 5:30 HR Low - 150 lumens; 18:00 HR Walk - 40 lumens Charge Time: 5:30 HR Weight: 172g 550 Lumens One Piece, Modular Design