⭐ Expert Features  3-Way Connectivity Wizardry: Instantly hop between Bluetooth 5.4, TF Card, and USB Flash Drive like a DJ flipping universes. Perfect for offline jams, guest playlists, or that one friend who still stores music on a USB stick. TWS Stereo Mode: Connect two BS153 units wirelessly to summon true left-right stereo separation—ideal for parties, backyard BBQs, movie nights, gaming marathons, or pretending your room is a mini IMAX. Deep Bass Boost: Tuned acoustics + sealed chamber + passive radiator = a surprising “THUMP” from a tiny body. Great for EDM drops, movie explosions, and game soundtracks that need extra oomph. 5W RMS Everyday Efficiency: Clean, clear, distortion-free sound for bedrooms, desks, cafés, and small gatherings—your reliable daily audio sidekick. Smart Controls at Your Fingertips: Dedicated physical buttons let you control music playback, switch modes, adjust volume, and skip tracks without touching your phone. Hands-Free Call Support: Built-in mic + voice prompts = seamless calls during work, travel, or that chaotic group chat meeting. 1200mAh Long-Life Battery: Up to 8 hours of runtime at 50% volume—perfect for all-day playlists, road trips, or a full shift at the office. Ultra-Portable Build: At just 214g and compact dimensions, it slips into any bag. Your “go anywhere, play anything” travel buddy. Bass Diaphragm Magic: Passive radiator enhances low-end performance so your music sounds fuller, richer, and more alive. Multiple Interfaces: Includes USB-C, TF Card slot, and USB Flash Drive support—maximum compatibility for minimal effort.   📊 Expert Specs  ~ GREY Feature Specification Model Number BS153 Connectivity BT, TF Card, USB Flash Drive BT Version 5.4 Wireless Range 10 m Speaker Layout 1.0 (Mono) Speaker Output 5 W RMS (1×5 W) Driver Size 1× 45 mm Frequency Response 100 Hz – 20 kHz Bass Enhancement Passive Radiator (Bass Diaphragm) Interface USB-C, TF Card Slot, USB Flash Drive TF Card Support Up to 32 GB USB Flash Drive Support Up to 32 GB Battery Capacity 1200 mAh Li-ion Battery Life Up to 8 hours (50% volume) Power Rating 5V ⎓ 500 mA Weight 214 ± 5 g Size 94 × 74 × 38.6 mm