You have to do your part.. - Walkers Silencer R600 26dB Ear Buds

1st.. not sure what was up with CS in 2021, maybe Covid stuff? But my experience was great.. circa 2022/2023 had mine replaced due to washing machine exposure. That's a 5 in my book. 2nd Clean the contacts on your buds, and the box. Fully charge them.. in the box.. plugged in. Make sure each bud has a red indicator light! Make sure that your foam tips are not keeping the buds from making contact.. I've been using mine for a couple years. Zero problems, but.. I've helped a few folks follow directions, and theirs worked just fine.