As a re-optimization product, EDX Pro s fully upgraded in configuration, interface, cable and appearance, which highly restores on-the-spot atmosphere and gives you shock bass quality. [Comfortable Wear] Ergonomic cavity structure fits the auricle and PU ear hooks reduce stress, which allows you to wear for a long time without pressure. [Upgrade Interface] With 0.75mm standard gold-plated pin, EDX Pro can be upgraded to become BT earbuds by replacing the cable, simple and fast. [Upgrade Cable] New oxygen-free cooper flat cable, ensures smooth transmission of sound signals and effectively prevents entanglement, more durable and flexible to use. [Upgrade Appearance] With rare high-end inlay technology, the combination of resin cavity and metal ornaments shows extraordinary texture for a stylish and elegant appearance. Specifications: : KZ Model: EDX Pro Material: Metal + Resin Color: White / Black / Cyan (Optional) Wire Control: No Mic/ With Mic (Optional) Wear Type: Ear Hook Sensitivity: 112dB Frequency Range: 10Hz-20KHz Plug Type: 3.5mm Pin Type: 0.75mm Cable: Oxygen-free Copper Flat Cable Cable Length: 125 plusmn;5cm Package Size: 10 * 7 * 3cm / 3.94 * 2.76 * 1.18in Package Weight: 70g / 2.47oz Note: Please read the user manual carefully before using this product. Package List: 1 * Earphones with Wire 4 * Earplug Silicone Caps 1 * User Manual