Night Provision 2 Color LED Bike Light: DUO-120 Red/White Strobe - PSR-120 Police Patrol Red/Blue Strobe - Alternating 120 Lumens MAX &#x2714; MAXIMIZE PRESENCE WITH BRIGHT CHANGING RED & WHITE COLORS: Rapid Alternating Of Colors From RED To WHITE Will Alert Every Driver Of Your Presence - 240 Degrees Visibility - Ensure Maximum Safety While Riding &#x2714; 2 LIGHTS IN 1: Use As A Front Or Rear Bike Light - Choose RED or WHITE - 6 Modes To Choose Allowing You To Have The Most Versatility - Use Steady Red or White, Strobe Red or White, Or Alternating Red or White. &#x2714; NEVER BUY BATTERIES AGAIN: USB Rechargeable 3.7v 600mAh With A Maximum Run-Time of 14 Hours - For Extended Trips. &#x2714; RELIABILITY KEEPS YOU ON THE ROAD: Water Proof Grade IPX-6 - Rubber seals allows for protection against shocks and rainy days. &#x2714; SAVE TIME STRAP ON / OFF IN 3 SECONDS: No Tools Required. Simply strap on in 3 seconds and go - Removes in 3 seconds and place in your pocket or bag - Universal fit for anything you can think of; Bicycles, Strollers, Dog leash, Hats, Helmets, Backpacks, Bags. The alternating Red & White is also idea for Security, Fire Firefighters, & EMS.