NiteRider Lumina 750 Boost Bike Light If you get the product and it shows a red light. Please hold the button until the light turns blue so you can start using it. Power Source: USB rechargeable Li-ion Batteries Included: yes Burn Time: 40 min - 18 hours Lumens: 750, Modes: 750 lumen Boost, 600 lumens, 300 lumens, 150 lumens, 40 lumens, flashing