Custom Flashlights & Lanterns, Duo Bike Light Set - 30 Lumens & Multi-Mode, Contains two lights: Clear for front of bike Red for back of bike Lights can be set for steady on, slow flashing or fast flashing Easily fastens to bike with elastic strap Translucent case allows for optimum illumination Each set stores in a durable plastic case with magnetic closure 30 Lumens Powered by 2 CR2032 lithium cell batteries, inserted into each light ... #WLT-DB14 $5.00/each.