Properly cleaning a timepiece can be a delicate process. The ChronoPen from AIS makes it easy. The all-in-one tool houses 30ml of specially-formulated, Swiss Made cleaning solution and has a soft brush head with extra-fine bristles to remove dust and dirt from even the smallest of cracks and crevices. Made without any harsh chemicals or abrasives, it's safe for use on stainless steel, gold, platinum, bronze, carbon fiber, and ceramic as well as other parts made of sapphire crystal, diamonds, and rubber. Also included is a polishing cloth for drying and further enhancing the cleaning of the watch.