Polar unisex loop 2 smoky black bluetooth activity tracker alarm watch 90054913 specifications brand polar packaging polar packaging case width approx 20mm case depth approx 11mm gender unisex dial colour lcd date yes clasp type push button deployment case material plasticresin strap type rubber strap colour black water resistance 200 metres movement japanese quartz chronograph na mpn 90054913 guarantee polar 2 year gu