Product Material :Metal, TPE, ABSHow to use: Plug and play;Do not use high power player; Volume: push toward the + sign to turn up the volume, push toward the - sign to turn down the volume.Answer button: click to answer when the call comes in, click to hang up when the call ends, click to pause/play when listening to music.Product Features :Sound quality: medium-high frequency, with sufficient reverberation and wide & even frequency response. Product features: 1. The conductor inside the product is made from ultra thin paint of high purity wrapped by oxygen-free copper, adding color to your experience when listening to music with the earphones. 2. The wire is made from highly elastic TPE, greatly increasing the use life of the product. 3. High-level and fashionable appearance. 4. With standard TYPE-C port, it gives you different experience of calling and music.Precautions :1. Long-time continuous use may cause damage to your ears; 2. Do not use when driving a vehicle. 3. Compatible with most Type- C ports (without 3.5mm port). Try it on prior to purchase.Storage Method :Keep away from fire and humidity. Store in a dry and cool place.Shelf life (days),0