Suunto Wrist-Top Computer Watch Suunto Wrist-Top Computer Watch Replacement Battery Kit (Moquito and D3)

1. Insert a coin into the slot on the battery compartment cover on the backside of the Wristop (for the lrg. black covers, a NICKEL is the correct coin). NEVER USE A SCREWDRIVER. There are no threads!
2. Turn the coin counterclockwise just until it lines up with the circle marked "OPEN" alongside the cover.
3. Remove the cover. The cover will usually not pop out. Use a fingernail to pry it open but mind the O-ring. Ensure that the O ring and all surfaces are clean and dry. Do not stretch or puncture the O ring.
4. Remove the old battery carefully.
5. Place the new battery into the compartment (positive side facing up).
6. With the O ring in the correct position, replace the battery compartment cover and turn it clockwise with a coin just until it lines up with the "CLOSED" circle. DO NOT TURN PAST THIS POINT.