AIf you use it in your business
≈ $1,540– $4,610
a year, if you don't charge for the test today
It pays for itself in 6–17 weeks.
How is this calculated?
You charge $20 for the water-resistance test when you replace a battery (assumption: in the US a battery alone starts at $20 and reseal plus pressure test is $45–60, Long's Jewelers; in the UK from £10 versus from £40, Aspens Jewellers; that gap includes the gasket, so we count only $20) on 2–6 watches a week (assumption), 48 weeks a year, minus about 5 min of counter time at $45/h ($4) per test. Returns of flooded watches avoided are not counted.
Source: longsjewelers.com, watch repair cost (checked Nov 10, 2026) · aspensjewellers.co.uk, watch batteries and pressure testing (checked Nov 10, 2026) · tests per week, price per test and counter time: assumptions
