Announcement: Please wear the Headphone correctly to get best sound quality effect. line side is left, non-line side is right. Do not disassemble the hardware. Please use the clean and dry cotton cloth to clean the Headphone. Precautionary measure: 1. Please use the moderate volume to enjoy music and to avoid bad effect to listening. 2. Please do not use the Headphone in exposed liquid, moisture or overweight environment. 3. Non-professionals do not disassemble the Headphone. Box Contains Gaming Headphone.