JRL Professional Onyx Cordless Clipper Features & Benefits: Patented Reset IQ Charge Technology: A new way of charging that extends the battery life. This design will consistently charge to 100% even after extended use. 3 Hours For Regular Charging, 5 Hours for Reset IQ Charging. Patented Smart-Clip Technology: Clipper senses blade resistance and revs up the motor speed, therefore clipper will never drag or stall. Guarantees a smooth even cut every time. Constant power: 2-Adjustment speeds for cutting versatility, 6,000 & 7,500 RPM and maintains speeds during run time. Equipped with Onyx Fade Precision blade: Helps get the fresh fade look, Max. length: 3.5mm Quiet Motor: Creates a quiet work environment Max 5 hours run-time: 3 hours of charging produces 5 hours battery life Advanced lever locking feature: 5 Steady level locking adjustments with infinite variable control that maintains over long term use. Patented Cool blade technology: Special material keeps blade cool to the touch making blade cooler than most clippers in a 30-minute test. Blade is also interchangeable with most professional clipper brands. LED Display: LED display indicates remaining battery time in the current speed setting. Reset iQ charging dock is included Included Accessories:  1 Screwdriver 1 Brush, 1 Lubricant Oil 1 Blade Protector 10 Comb Guards (½#, 1#, 1-1/2#, 2#, 3#, 4#, 5#, 6#, 7#, 8#) 1 U.S. Plug