Transmission range: up to 15 meters, enabling wireless audio without cords while you move. Waterproof design: built to withstand exposure to sweat, rain, and mild splashes, suitable for active or wet environments. Single or bilateral stereo: supports either singleear use or true stereo listening for immersive sound when desired. Bluetooth protocol: Bluetooth 5.3 provides stable pairing, efficient power use, and broad device compatibility. Compatibility: works with Bluetoothenabled devices such as smartphones, tablets, and PCs; can connect to compatible TVs and other peripherals. Performance highlights: reliable wireless audio transmission with stereo output; robust range and practical protection in wet conditions. Use scenarios: 1) Outdoor workouts: run, cycle, or hike with music or calls without wires, even in light rain. 2) Home entertainment: enjoy music or videos from a Bluetoothenabled device anywhere within 15 meters of the source. 3) Wet or sweaty environments: gym, poolside events, or outdoor activities where moisture is present, thanks to waterproof design. Notes: specification details are maintained as provided (transmission range, waterproof, bilateral stereo, Bluetooth 5.3) to ensure consistency with the original product data.