## 5 Results and Discussion
### Evaluation Method 1: Heuristic Evaluation Results
\begin{table}
\begin{tabular}{c c c c} \hline \hline
**Heuristics** & \multicolumn{2}{c}{**Positive Comments**} & **Negative Comments** \\ \hline \multirow{4}{*}{Aesthetic and Minimalist Design} & - & GW5 has a versatile design and & - & GW5 should have a physical rotating \\  & - & scratch-resistance screen & & bezel as well \\  & - & New watch faces in GW5 are great & & \\ \multirow{4}{*}{Match Between System and Real World} & - & GW5 is responsive & - & Need initial learning in order to be \\  & - & GW5 application loads quickly & & familiar with smartwatch \\  & - & GW4 updates make touch display & \\ \multirow{4}{*}{Error Tolerance} & - & No comment & - & GW4 updates make touch display \\  & - & No comment & - & non-functional \\  & - & GW4 error messages closed faster than & & the time to read them \\ \multirow{4}{*}{Ease of Use} & - & The GW4 rotating bezel is a handy & & \\  & navigation tool & - & No comment \\  & - & Typing keyboard is better in GW5 & & \\ \multirow{4}{*}{Flexibility and Efficiency of Use} & - & Samsung Watch 4 disconnects from the & watch and does not \\  & - & Phone calls sound clean on GW5 & automatically reconnect \\  & - & Automatic email notifications are & \\ \multirow{4}{*}{Features} & - & GW5 has skin temperature sensor, which I & \\  & found cool. & - & GW4 has inconsistent battery life \\ \multirow{4}{*}{Features} & - & Bigger battery in GW5 & - & GW5 has most of the features that are \\  & - & Six evaluators were satisfied with the & & the same as Watch 4 \\ \multirow{4}{*}{Flexibility and Efficiency of Use} & - & & \\  & accuracy of sleep and heart monitoring & & \\  & features in GW5 & & \\ \hline \hline \end{tabular}
\end{table} 
Table 7: Participants’ comments on Galaxy smartwatches sorted by the usability principle. \begin{table}
\begin{tabular}{c c c} \hline \hline
**Heuristics** & \multicolumn{2}{c}{**Positive Comments**} & **Negative Comments** \\ \hline \multirow{4}{*}{Aesthetic and Minimalist Design} & - & Fitbit application is not too complicated & \begin{tabular}{c} Six evaluators commented that the Fitbit \\ Charge 5 wristband seems loose on their \\ wrists, hence, they find it difficult to wear it \\ every day \\ \end{tabular} \\ \multirow{4}{*}{Match Between System and Real World} & - & The language is understandable and the & - & Charge 5 does not have a voice assistant \\  & - & Charge 5 allows going back to the previous & \\ \multirow{4}{*}{Error Tolerance} & - & \begin{tabular}{c} Charge 5 allows going back to the previous \\ menu from anywhere \\ \end{tabular} \\  & - & In Versa 2, alarm setting and reminders & - & Versa 2 does not pair after resetting \\ \multirow{4}{*}{Ease of Use} & - & \begin{tabular}{c} In Versa 2, alarm setting and reminders \\ are easy \\ \end{tabular} & - & \begin{tabular}{c} - \\ Charge 5 does not have a microphone \\ or speaker \\ \end{tabular} \\  & - & The Fitbit watch feature to monitor the intake & & \\ \multirow{4}{*}{Features} & - & \
\begin{tabular}{c} of calories sounds great \\ Heart rate and all other features are present in \\ FB Charge 5 despite the small size \\ \end{tabular} &
\begin{tabular}{c} Versa 2 sleep tracking is sometimes worrying \\ \end{tabular} \\  & - & Versa 2 allows use of Alexa & \\ \multirow{4}{*}{Satisfaction} & - & Fitbit Charge 5 is comfortable to wear & - & Charge 5 battery drains rapidly \\  & - & Versa 2 has a better battery life & - & Heart rate monitoring requires \\ \cline{1-1}  & & immediate improvements & \\ \hline \hline \end{tabular}
\end{table} 
Table 8: Participants’ comments on Fitbit smartwatches sorted by usability principle. of activity tracking features in the GW5 because four of the evaluators were dissatisfied with the results. We also observed that Charge 5 has design issues, missing voice input, and with the speakers and voice assistant; however, Versa 2 has a better battery life and a voice assistant that makes setting reminders and alarms easier.