KEY FEATURES Wireless Play, hands-free calling is also possible with the Bluetooth-enable By adopting high-capacity battery, up to 14 hours of continuous music playback Hold the impact from the outside with a metal housing, reduce unwanted vibration Caliber 10mm driver unit to realize the heavy bass of powerful & Extreme Deep passport Reproduce the high-quality bass in high magnetic force neodymium driver unit mounting Extreme bus booster circuit equipped Guard the housing from the impact in the tough 'rubber protect