50-Hours Power Marathon & LED Power Tracker: The built-in LED display shows exact remaining power (0-100%), while the 500mAh portable charging case delivers a whopping 50 hours of total playtime by alternating between wireless earbuds. Built tough with 500+ charge cycles, these ear buds are future-proof. | Bluetooth 5.3 Earbuds with 15m Stable Connection - Latest Bluetooth 5.3 maintains seamless audio sync up to 49ft (15m), ideal for leaving your phone charging while moving around the house/office. Perfect for gym workouts. | HD Stereo Sound + Clear Mic - 14.2mm bass drivers deliver punchy lows & sparkling highs. ZIUTY ear buds ensure you hear every lyric clearly on even crowded subways, and allow you to take work calls in coffee shops. | Anti-Slip Compact Design - Diamond-cut charging case with sweat-resistant matte coating fits perfectly in jeans coin pockets. Premium sandblasted texture prevents drops during runs - 3x more grip than other bluetooth headphones. | All-Day Comfort (0.14oz/Ear) for Small Ears - Ergonomic semi-in-ear design (4 sizes of gel tips included) creates 360° weight distribution. 36% lighter than Airr-Pods pro2(0.14oz vs 0.19oz) with open acoustic design - hear traffic alerts and baby monitors while listening.