Features: Adopts premium light beads, bright with long service life. 2 kinds of modes with 3 brightness options can meet your different needs. Excellent waterproof processing that ensures the safety of battery compartment, switch is sensitive and waterproof. With built-in battery, and supports USB charging, very convenient to use and energy-saving. Make your bike highly visible so that it can guarantee your cycling safety. With one quick release rubber mount, easy to install on bike seat tube, fits 19-52mm tube. Specifications: Material: ABS + Aluminum Alloy Light Source: 16xpcs LED Battery: 3.7V 500mah Mode: Steady-On Mode(single press): weak light, middle light, strong light Flash Mode(double press): weak light, middle light, strong light Waterproof: Rainproof Applicable to tube diameter: 19-52mm / 0.75-2inch Size: Approx. 3.5x3.5x3cm / 1.38x1.38x1.18inch Weight: Approx. 88g Packing List: 1 x Bike Warning Light 1 x USB Cable 1 x Mount Set
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