Do not invest in Fitbit. Poor quality watches and zero customer service. My first Fitbit lasted five and a half years. My second watch 19 months, battery died and out of warranty. My third watch was not tracking properly after the first month but I continued. Once reported they replaced. The second watch has failed after one month and after two and a half months of trouble shooting and many excuses I am still without a properly working Fitbit. I am being strung along until my warranty runs out. I will not let this go as I reached out to company where I purchased to see if they can expedite a resolution. I have been a loyal consumer and they have failed. I like Fitbit as I only want to track steps, sleep, RHR.