by staff » Wed Jan 22, 2020 9:17 pm
Hello, once in a while, the calibrate may be set as a standard for 1 month or 3 months or 6 months depending on the level of accuracy we need. If used at home generally 6-12 months per 1 time is enough. This may be a sign of exhaustion. Try changing the battery first. Normal watch batteries can be purchased from watch shops.
Staff - MySkinRecipes