Muc-Off Optx. Pack contains a 35ml device, screen cleaner and ultra fine, machine washable microfibre cloth all contained in a handy contaminate-free EVA case. Removes dust, fingerprints and grime from mobile phones, sat navs, MP3/4 players, laptops and TV and computer screens. Formulated using PH neutral soaps and de-ionised water. Safe on delicate finishes.