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2 fireflies-like True wireless earbuds, breathing LED light bluetooth 5.0 Powerful Extra Bass earbuds IPX5 waterproof comfort durability auto paring earphones. 2 earbuds have true stereo call making for crystal clear voice transmission at the same time Feature: Dustproof / Waterproof -- IPX5 National Industrial Standard waterproof grade, which can be put in ears when you are walking in the small raining day. Anti-fall lobe shape--Stick to your ears all the time whenever you are running in the morning, play tennis in the sunshine Fine work--2 fireflies -- You can see 2 ear-buds flash their breath LED light time to time when charging when look through the transparent up-cover , which most like 2 fireflies have some rest in the summer night. Cold Light Intelligent LED--Amazing breathing light by flashing Cold LED which is energized by pulse-width modulated electrical pulses. The effect of these pulses on the indicator varies in intensity and mimics a rhythm typical of breathing