Tumi Wireless Earbuds, Black/Gunmetal EXTERNAL FEATURES: 500 mAh battery bank and ballistic nylon case included; clear and crisp sound; aircraft-grade CNC aluminum casings INTERNAL FEATURES: Up to 25 hrs of wireless playtime; 10M/33ft bluetooth range MATERIALS: Aluminum DIMENSIONS: Dimensions in inches 6" X 3" X 1"; weight 0.2 lbs