Latest generation super bright LEDs, 1 watt, 100,000 hour 20 flash patterns front & back, 3 rear traffic director flash patterns L & R Alley & Take-Down Light, Brake & Cargo Light, Tri-Directional Light Take-Down Lights & L & R Cargo (Control L & R Cargo Lights) have three modes: lights on steady, flashing alternatively or flashing simultaneously. Both Take Down Lights and Cargo Lights can flash together with the main flashers.