e-FortuneCity&reg; Stainless Steels Watch Case Back Opening Tool Knife Opener Watch Maker Jeweler Battery Replacement Repair Tool (2 Pack) 100% Brand new and high quality. Made of durable stainless steel and plastic. Watch Opener configured to make opening certain cases easier. This Pocket Watch Opener is popular and many watchmakers' ideal tool. Simply place the blade under the case back and pry it off.