White light: 30 lumens - Red light: 4 lumens Run Time - White Mode: 8 - 16 hours; Red Mode: 16 - 25hours No tools installation Both Lights - Steady white, steady red, flash white and flash red modes 8 CR2032 batteries ( included) The Toggle 350 Light Set's unique design allows you to use either light as a headlight or taillight! You can run them as traditional lights or run two tail or two headlights.