Review on KRYPTONITE Comet F100 & R100 Bike Light Set: Premium LED Headlight and Back Lights with Long Life Lithium Battery by Douglas Norton

I have a cycling family. We have 10 road and trail bikes. Over the years I have tried many turn signals for our road bikes and failed one by one until I bought my first set a few years ago. They are not designed for headlights. How flash drives work great. Bright and eye-catching. They are weather resistant and the batteries last a long time. I purposely don't want the hassle of USB charging, and they've never lasted as long as these. The CR2032 batteries used are very cheap at Revain. All five kits still work for me and I've never had a problem.