Battery Change Starter Kit contains all the basics required to get started in the watch battery replacement business. This kit includes the perfect mix of the most popular Renata batteries (225 pieces assorted), organized in 60 drawer cabinet (display). Supplied with this display are 2 watch case openers, a small Phillips screwdriver, a small flat head screwdriver, battery size selector, plastic cell tweezers, cross reference guides, battery change instructions and a Renata Traffic poster.