On-ear headphones are all about all-day battery and comfort, and riff 2 is no exception. It delivers the goods affordably with 34 hours of battery life, a backup aux cable and the peace of mind that comes with tile™ finding technology.Number of Batteries: 1Included: 1 Owners Manual(s), 1 Carrying Case(s)Features: Adjustable Headband, Built-In Microphone, CordlessBattery Type: Lithium IonManufacturer Warranty: 90 Day PartsPower Source: Battery (included)Measurements: 8.27 Length/Inches, 5.51 Width/Inches, 3.11 Height/InchesWeight (lb.): 0.6 LbCountry of Origin: Imported