NOTE: Change the battery at your own risk. Suunto recommends
you to have the batteries changed in official Suunto
services.
To replace the battery:
1. Insert a coin into the slot located on the battery
compartment cover on the backside of your Suunto
Observer.
2. Turn the coin counterclockwise until it is aligned
with the open position marker.
3. Remove the battery compartment cover and the
O-ring, and discard them. Ensure that all surfaces
are clean and dry.
4. Remove the old battery carefully.
5. Place the new battery into the battery compart-
ment under the metal contact clips, with the posi-
tive side facing up.
6. With the O-ring in the correct position, replace the
battery compartment cover and turn it with the
coin clockwise until it is aligned with the closed
position marker. Do not press onto the battery com-
partment cover while turning it with a coin.
NOTE: Perform battery replacement with extreme care
to ensure that your Suunto Observer remains water
resistant. Careless battery replacement may void
warranty.
WARNING: This Suunto product contains a Lithium cell battery. To reduce risk of fire or
burns, do not disassemble, crush, puncture, short external contacts, charge or dispose
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