The headphones are very comfortable. volume Sound and beautiful. Easy and understandable control of listeners. All buttons are located on the panel, which is located on the neck wire. Bought this product from Amazon. Delivery was 4 days. The action came out 899r. Technical characteristics of wireless headphones are very pleased. The battery, when fully charged, lasts about 8 hours. High quality premium sounds. Lightweight responsive fit. Complete with the listeners, the company gave 2 spare silicone tips, a warranty card, a sticker for the phone.