This popular set features a compact form with high-output LEDs. The Cateye HL-EL135 has 3 LEDs with Opticube lens technology for a wide beam and excellent visibility. It offers 150 Candlepower output and includes 2 x AA batteries and a Flextight bracket (22-32mm). Runtime: Constant - 80 hrs, Flashing - 320 hrs. The Omni 5 features 5 LEDs for 360-degree visibility with Opticube lens technology. It includes a Flextight bracket and belt clip, with 3 modes: Rapid, Flash, and Constant. Runtimes: 120hr (Rapid), 90hr (Flash), 60hr (Constant).