Portland Design Works Aether Demon USB Rechargeable Taillight

The Aether Demon™ tail light is a friendly little devil who wards off approaching vehicles with its winking, blinking, and intensely glaring 0.5 watt LED eye.

You can forget about disposable alkaline batteries, because the Aether Demon™ runs on a lithium-ion battery that recharges via USB port. Plus it's packed with the highest quality parts