On-The-Go Charging – A single 1.5-hour charge provides the Sport Series Earbuds and their powerful Lithium Polymer 70 mAh battery with up to 6 hours of HD Bluetooth 4.2 play and talk time for any iOS or Android smartphone or other Bluetooth-enabled device. A Micro-USB cable is provided for easy charging wherever a standard USB port is available, so you will always have enough power for even your longest workouts. Number of Batteries: 1 Features: Volume Control, Bluetooth Compatible Battery Type: Lithium Ion Manufacturer Warranty: 1 Year Labor Limited Power Source: Battery (included) Measurements: 1.25 Length/Inches, 5.75 Height/Inches, 4 Width/Inches Weight (lb.): 0.25 Lb Country of Origin: Imported