Xiaomi Enchen BlackStone 3D Smart Floating Blade Head Electric Shaver Waterproof USB Charging For Men - BlackOriginal textHighlights 3D Floating Blade Head BlackStone offers three separate sets of floating blades, it is one third of the area of an ordinary double blade shaver and can be adapted to different face shapes. Ultra thin Double ring Knife Net The knife net and blade are double loop design, which greatly increases the area of the knife net in contact with the face and improves the shaving efficiency. High power But Mute The shaver is equipped with 5W power. It