Highly visible front and rear (more than 300m) Shock and moisture resistant. Easy to attach and quick to remove with attachable fasteners. Headlight: Powerful COB LED; 3 mode (100% / 50% / flashing); Powered by 3XAAA batteries (not included) Rear light: 4 modes (100% / 50% flashing / continuous); Powered by 2XAAA batteries (not included)