The Lumintrail bicycle light set will make your bike stand out and keep you safe while riding at night. The Headlight is super bright with a powerful 1000 lumen Cree XM-L LED and features three light modes and three flashing modes. The included taillight has two modes - steady and flashing with side visibility. Perfect for commuting at night and extra safety during the day. Flashing lights will grab motorists attention and keep you well protected. The Lumintrail bike light charges from your computer, wall charger or any device with a USB port using the included micro-usb cable. Fully charged in 4 hours, the led charging indicator light illuminates steady when charging is complete. During use, led flashes to indicate low battery giving you time to switch to a lower mode and conserve power. Package Includes: Headlight (rechargeable Li-ion 2600mAh battery included) Taillight (2x CR2032 non-rechargeable batteries included.) Handlebar and Seatpost Mount USB Charging Cable Features: Powerful 1000 Lumen XM-L LED Headlight with 3 light modes (High-Med-Low) and 3 flashing modes (Quick Flash Med - Slow Flash High - Slow Flash Low) Rear red safety taillight with 2 modes - steady and flashing Battery Indicator LED flashes when battery power is low Fully charged in 4 hours (micro usb cable included). Durable aluminum construction and IP44 water resistant rating Tool Free installation - Rubber Mounts are easily attached and removed from bike in seconds Quick Release Mount allows headlight to be removed from bracket Headlight Operation: Press button to power on With light on, press button to switch brightness settings To switch between constant and flashing modes, with light on, hold button down until mode switches (light will appear to turn off before switching modes. Do not release button until mode changes) Hold button down to power off. Headlight Run Times: High (1000 Lumen): 2hrs | Med (500 Lum Super Bright & Safe - 1000 Lumen Cree XM-L LED Headlight is ultra bright, perfect for night riding. USB Rechargable Headlight - Quickly and fully charged in 4 hours. Rechargeable lithium 3.7V 2600mAh Battery and Micro USB-to-USB cable included (Tail light has non-rechargeable battery). Durable & Water Resistant - Sturdy and Quality Aluminum construction with IP44 water resistant rating. Multiple Modes - The headlight has 3 Steady Light modes and 3 Flashing Modes. The included super compact rear tail light has 2 modes - Steady and Flashing with side visibility. Easy & Quick to Install - Simple attachment with rubber straps. Quick attachment and detachment from bike. No tools required. Can also be used as a handheld.