Product Features Utillizes a LED-T6 white LED, max 1000-lumens output. One key button easy to switch 5 modes. 4 brightness levels plus warning SOS mode. High/ Medium/ Low / Strobe / SOS modes Convenient USB charging design. The taillight of this product uses two CR2032 batteries, not rechargeable batteries Constant current circuit provide constant brightness. Practical, Reliable, and Durable high-flexiibility mount straps . Bracket can compatible with dimensions in the range of 22～35mm (0.86in ~1.38in) handlebar Made of aluminum alloy. Can be used as a flashlight Product Size :11x2.7x2.7CM
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