1. The 3.5mm interface supports all 3.5mm devices such as calls, music, selfie sticks, USB shields, etc., and is compatible with all iOS systems. 2. The shell is made of ABS material, bright surface, soft touch, durable, protects the internal chips, powder metallurgy, inner iron design, high strength, PIN pin contacts are gold-plated. 3. HiFi sound quality, restore the original sound quality when listening to songs. 4. Plug and play, no driver required. 5. Interface: 8 Pin
