Cateye EL-Uno Front and TL-Rapid 3 Rear Light Set: Superb compact set that packs some punch! The popular single LED/ Single Battery Uno shines out front, while the Rapid 3 with its high power centre LED really takes care of backwards visibility. Uno Front Light: Never get caught without a light! The Uno represents the perfect light for every day around-town commuting or for an emergency light for when you stay late at the café. This light has evolved from a unit with multiple batteries and LEDs to a significantly smaller, highly efficient light. Uno. One battery. One LED. One bright light! Rapid 3 Rear Light: Two standard LEDs with Cateye superb lens technology provide great all-round visibility, then a single high power LED in the centre provides a superb pulse of light that really stands out. This amazing little light has several flashing sequences to maximise brightness and battery life.