LED Safety Light for Night Runs - Built-in illuminated light strip with steady, breathing, and flashing modes to increase visibility and safety during nighttime workouts. IP68 Waterproof – Swim-Ready Fully sweatproof and waterproof, designed for swimming up to 2 meters for up to 2 hours. Perfect for pool training and open-water workouts. Bluetooth + MP3 Dual Mode (32GB Storage) - Bluetooth 6.0 delivers fast, stable connectivity. Switch to MP3 mode with built-in 32GB storage—store up to 8,000 songs and swim phone-free. Open-Ear Comfort with Secure Titanium Fit - Soft silicone ear hooks and memory titanium wire provide a pressure-free, skin-friendly fit that stays secure during intense training. Premium Sound & Clear Calls - Enjoy vivid audio, enhanced bass, and clear call quality whether you’re training or taking calls on the go. Up to 10 Hours Battery + Fast Charging - All-day listening on a single charge. Just 10 minutes of charging gives you up to 2 hours of playback. Open-Ear Awareness for Safer Training - Stay aware of traffic, teammates, and your surroundings while enjoying your music. Dual-Device Pairing - Connect to two Bluetooth devices simultaneously and switch seamlessly between them. Adjustable Strap for Smaller Head Sizes - Includes an adjustable band for women and kids, ensuring a secure, no-slip fit.