It measures 6 x 1.4 x 1.7 inches, around the same length of a pen, so it fits in a pant or shirt pocket. You can also ... this compact knife sharpener will keep your knives razor-sharp.

Is it safe to carry a cellphone in a handy shirt pocket all the time over your heart ... devices such as pacemakers or defibrillators keep their cellphones and media players at least six inches ...