Oster Professional Octane Cordless ClipperFor the super savvy stylist who needs a high performance tool that keeps up with a demanding schedule This cordless clipper uses a Li ION rechargeable battery for longer cutting time between charges With more than twice the running time of a regular battery you have the ability to cut more and recharge less It holds steady power for as long as the battery runs without torque reduction in the motor for cut after cut on any hair type With a dual battery