This is a bright compact bike light with a unique Smart Brake Feature. While it senses vibration and movement, the red light flashes like normal bike tail lights. When you stop, the light goes solid and extra bright just like a brake light on a car or motorcycle.    

Descriptions:

    - Output: 60 Lumen
    - LED: 30* Red LED
    - Run time: 1.8-6.5 hours
    - Mode: Low/High/50% Flashing/100% Flashing/OFF
    - Special Mode:
        Smart Brake Light: The light will be switched to high intensity brake mode automatically when braking
        ECO Mode: To save the battery life, it will turn off automatically after 5 minutes without any movement.
    - Battery: Built-in USB rechargeable Lithium Polymer Battery
    - Patented USB charging interface
    - Water Resistant Design and Construction/Waterproof up to IP65
    - Dimensions: 76x30x30mm
    - Weight: 70g

Package Contents:

    - 1 x Light head
    - 1 x USB Charge Cable
    - 1 x Mount bracket