GPCT Tail Light Bike Light (Road Safety Equipment, Night Time Riding, Three Red LED Lights, Two Lasers, 7 LED Light Modes, Simple Installation) - Black TWO LASERS AND THREE LED LIGHTS - Features three red LED lights and two lasers, which create a visual safety lane behind your bike so others on the road know how to keep a safe distance. SEVEN LED LIGHTING MODES - 7 LED light modes: steady-on, rapid flash, slow flash, slow flash from left to right, slow flash from right to left, rapid flash from right to left, and left-and-right loop flash. Laser lights can be set to steady-on or flashing. SIMPLE INSTALLATION - Easy DIY installation with included mounting buckle. Fits seat posts up to 1.5" in diameter. WATER RESISTANT - Resists water for use everyday. Uses 2 AAA batteries (not included). 900mAh rechargeable batteries are recommended. INDUSTRY LEADING CUSTOMER SUPPORT - You can continue to rely on Electro-Deal to offer the markets most competitive prices, paired with industry leading customer support, and all backed by a one year, full manufacturers warranty on new products or a 90 day limited warranty for refurbished products! Laser Specs: 6855nm Illuminating Range: 260 Size: 3.152.721.30(LWH) Net Weight: 2.32oz Package Size: 2.724.771.22(LWH) Package Weight: 2.73oz Tail Light Mounting Buckle