Everyday household items

Watch stopped running

Whether a watch is quartz (battery) or mechanical (wound), a stopped watch almost always comes down to a dead battery, an unwound mainspring, or magnetism, all of which are simple to check yourself.

Difficulty
Easy
Time
10 minutes to check, 1–3 days for service
DIY cost
$0–$10
Pro cost
$10–$40

Symptoms

  • Second hand not moving at all
  • Watch reads the same time as when it stopped
  • Digital display blank
  • Watch runs then stops intermittently

Likely causes

  • CommonDead battery (quartz watch)Batteries typically last one to three years and simply run out.
  • CommonMechanical/automatic watch not wound or worn enoughAutomatic watches rely on wrist motion and stop if left unworn.
  • PossibleWatch became magnetized, causing it to run fast, slow, or stopPhones, laptop speakers, and clasps on bags can magnetize a movement.
  • PossibleMoisture or dirt inside the case affecting the movementA cracked seal lets in moisture that gums up the gears.
  • Less commonBroken mainspring or internal part (mechanical)Old or shocked mechanical movements can fail internally.

What to do

  1. If it's a quartz watch, look for a second hand that ticks in tiny jumps; if it's stopped mid-tick, suspect the battery first.
  2. For an automatic/mechanical watch, wind the crown gently (if it has a manual-wind function) or wear it actively for a day to see if motion restarts it.
  3. Check whether the watch has been near strong magnets (phone case, speaker, laptop, purse clasp) recently.
  4. Gently shake the watch near your ear to listen for a faint ticking, which suggests it's magnetized rather than stopped for good.
  5. If it's a battery watch, take it to a jeweler or watch shop for a replacement battery rather than opening the case yourself, since this risks breaking the water seal.
  6. For suspected magnetization, a watch shop can demagnetize it in seconds with a demagnetizer tool.
  7. If none of this helps, the movement likely needs professional service.

Tools and parts

  • Watch shop visit (battery/demagnetizing)
Watch battery (specific to your model)Search: “watch battery replacement number on old battery”

When to call a pro

A jeweler or watch repair shop can replace a battery, demagnetize the movement, or diagnose a mechanical fault.

Safety

Generally low risk

Generally low risk for a careful person. Stop if anything looks different from what this guide describes.

Related guides

Operator provides AI-generated troubleshooting information. It can be wrong. For safety-critical, electrical, gas, structural, medical, automotive safety, or other high-risk problems, consult a qualified professional.