Xiaomi Mi Band 4 Charging Cable. Charging faster-Built-in high-quality copper wire core, charging faster. High strength and durability-tensile durability and flexibility are higher than those of ordinary wire. TPE fixing material-Use high-quality TPE fixing material to prevent skin cracking. Material: TPE, Input voltage: DC 5V, Input current: 250 mA (Max), Charging line length: 0.2/1M.