Bike Light Set Super Bright 5 LED Headlight, 3 LED Taillight, Quick-release Bike Light Set Headlight and Taillight Set 3 Super Bright Red LED Rear Light /Taillight, tool-less and quick-release mount; angle adjustable 3 modes: Chasing-Flashing-Steady Fit for bar diameter 25.4-31.8mm Weather resistant Battery: AAA*2 (Not Include)