Original Title: USB Charging Cable Charger Fitness Sport Tracker for Xiaomi Mi Band 4 Black Optimized Title: **Original USB Charging Cable for Xiaomi Mi Band 4 - Fast Charging, Durable & Compatible - Perfect for Fitness, Running & Sleep Tracking (Black)** (Note: The optimized title improves SEO by including keywords like "original," "fast charging," "durable," and "compatible," while also specifying the use case for fitness, running, and sleep tracking.)