Review on Stay Safe And Visible Anytime With GPMTER Ultra Bright USB Rechargeable Bike Tail Light - Perfect For Road And Mountain Bikes by Steven Wood

Update: December 2019 - Looks like the price went up now! I was going to buy another one, but it's no longer $7 USD. Overall it's still holding up. The plug cover for the Micro USB has become flimsy though probably due to to the elemental damage (i.e. rain, mud, cold temps, etc.)Old October 2019They work and they are awesomely bright! Not to mention they ARE indeed water resistant. Rode my Boosted Rev electric scooter today on a downpour Seattle rain and these lights were nice and bright and held up from the super wet weather! Very well worth it for less than $7. Thank you!