Braun Hair Clipper HC5050
"The Braun hair clipper is powered by a dual battery system. The two Ni-MH batteries are fully charged in 8 hours for 40 minutes of cordless performance. For non-stop operation simply use it corded. LED Charging Indicator: A LED light to indicate when the device is charging and when it is fully charged.8 Precise Length Settings: The adjustable guiding comb enables you to get the hairstyle you want. The comb covers the range from 3-24mm Memory SafetyLock System: Memory Safety Lock system smartly locks and memorizes the last used length setting even after removing the attachment."