The Wahl Lithium Ion Beret Trimmer is a powerful, super slim mains rechargeable hair trimmer, featuring brand new Lithium Ion Technology. With a brush steel casing and sleek design, it is a comfortable, lightweight hair trimmer with great control. It features an LED charging light, and gives 75 minutes of cordless operation on a 60 minute charge. It has snap on/off blades for easy changing, and it has a cutting length of 0.4mm.