If you want to keep track of your workout, a sport watch is a great choice. The built-in sleep tracker helps you measure how well you sleep. The model comes with a weight of 79 g.
From Argos
Garmin Fenix 7 Smart Watch - Silver
Hashtechguy Electronics
Garmin Fenix 7 silver with graphite band (010-02540-01) Smart Watch Euro Spec
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