The panasonic wet amp dry linear drive electric shaver boasts an array of smart features which deliver close comfortable and smooth results that last the flexible pivoting headprovides maximum coverage and closeness even on the most problematic areas multi fit arc blades fast linear motor drive slit foil the slit structure of the foils easily catches long beards automative stubble sensor detects the beard39s density adjusting its motor speed for a powerful yet gentle shave wet amp dry