1. Fastener shape,simple but nice 2. Reractable easier 3. No more tangling&assles with cords 4. More enloyable the sound SpecificationSuperior quality with factory wholesale price. The more you buy, the cheaper they are. It's our quantity discount policy.Newly developed flexiable Cord Button Winding Device.Never bothered by the long tangling earphone cords. convenient to carry. Fast delivery in 2 ...
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