High-quality Earphones with dynamic speaker systems for powerful, bass-driven stereo sound Built in Microphone and Volume control for Apple and Samsung devices with headphone socket ( some Apple earphone adapters may not support volume control functions) Comfortable and lightweight. Reinforced cable for durability. Carry case and various sizes of silicon earbuds are included Symmetrical reinforced, high grade cable with reduced cable noise. Slim 3.5mm jack can fit mobile phone cases.