Wahl Lithium Ion Pro Rechargeable Cordless Hair Clippers for Men, Woman, & Children with Smart Charge Technology for Convenient at Home Haircutting – Model 79470

Cordless Operation – The power of a corded hair clipper with the convenience of a cordless; to use simply plug the clipper into charge and unplug when ready to use with cordless convenience
Lithium Ion Power – The Lithium Pro Hair Clipper features up to a two-hour runtime on a full charge, which means you can achieve multiple home haircuts on a single charge.
Smart Charge Technology – Smart display light indicates the battery status from solid green (fully charged), solid red (charging) and flashing red (low power).