Soft leather zip-case measures 5 X 6 X 1.5 inches.
1 standard 2-prong adjustable opener for screw-backs.
1 large polishing cloth, 9 X 9 inches
1 opener for snap-back watches
1 scratch-brush for cleaning contacts
1 plastic tweezer for inserting the battery.
1 Spring lug remover. A
1 need-point tweezers, good for positioning screws.
Screw-back opener: the smallest and neatest
Polishing cloth: you are probably charging your customer £7.50 for changing the battery, don't give the watch back covered in fingerprints!
Scratch-brush: if you go to all the trouble of changing the battery then find the watch doesn't work, it's probably because the battery contacts are dirty. A scratch-brush is essential for cleaning the contacts.
Plastic tweezers: metal tweezers can short-circuit the battery and reduce its life. That is why you get customers complaining that the manufacturers say a battery should last 3 to 5 years but it has only lasted two weeks - it's because you touched both terminals of the battery with metal tweezers.
Watch bar remover: one side is the 'prongs' for removing spring bars. The other side is a fine point for pushing them out in watches where there is a hole in the watch lug...for pushing the spring bar out. Do no use the point as hook, you will break it.
Needle-point tweezers: very fine, the only way to position those tiny screws
Screwdrivers: just screwdrivers.