Introducing the NEW Interchangeable Lithium Battery Pack (FXBB24), featuring dual ball bearings for increased efficiency, 6,800 RPM / 13,600 SPM, and up to 2.5 hours of runtime. It includes a button for quick battery release and a 4-stage LED ring battery indicator. Experience the NEW 5-dentent locking stretch taper, zero-gap adjustability, and the NEW gold ultra-thin Metal Injection Molding (MIM) blade (FX8022G). Benefit from the oil reservoir for consistent lubrication, lower blade temperature, and the NEW improved all-metal housing. It also has an ergonomic finger rest, a removable hair pocket door, a knurled metal barbell grip, and a NEW tapered end cap with a hidden hanging hook. Plus, it comes with a limited 2-year warranty.