Reduce noise and protect ears. After wearing, it is invisible like ordinary earplugs, so you can listen to music and novels at work Comfortable to wear. Ergonomic design. No discomfort when wearing for a long time , to pulling, no entanglement or knotting, long service life Can be used in a variety of noise environments, concentrate on work Wide compatibility, plug and play 3.5mm universal interface Name: Bluetooth Work Earbuds Applicable to: For Work, Noise Suppression, Hearing Protection, Construction Sites, Noisy Places Colour:As Shown Material:plastic Package Contents: 1Pair x Headphones 1 x Receiver 1 x Storage Bag 1 x Data Line 1 x Clip 1 x Pin Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.