New - Retail 30-Day Warranty Sony MDRZX100BLK

✔ LATEST MODEL: The RunPhones newest model is useful for any exercise, from running to cross training to boxing, yoga & much more while keeping your hair, back, & sweat out of your face! RunPhones are also the ideal headphones for traveling and sleeping. You can comfortably lay on your side without ear buds digging into your head. ✔ GENUINE COMFORT: RunPhones are the world's most comfortable headphones for fitness and are guaranteed to stay put! Because nothing goes inside your ears, these high-quality, flat speakers are fully adjustable inside the headband so they're actually comfortable to wear. ✔ NO MORE WIRES: Put an end to the age-old earbud power struggle. RunPhones Wireless provide superior sound quality with eco-friendly, lead-free electronics allowing you to sync with Bluetooth and stream music up to 30 ft away with a battery life of up to 13 hours.