USA shipping is FREE when one battery is ordered all by itself.
This is the replacement battery for the WobL and WobL+ Watch.
Battery life for the watches is approximately 2-4 months. Battery life depends on the number of times you have the watch vibrate and how many alarms or countdown reminders are used. These advanced functions require more power than a traditional time/day/date watch.
See information about changing the battery on the downloadable instructions.