The Forerunner 310XT has been discontinued. It was replaced by the Garmin Forerunner 920XT.
Historic Range: $169.93-$399.99
2.5 oz / 72 g
2.1 in x 2.2 in x 0.8 in / 5.4 cm x 5.6 cm x 1.9 cm
1.3 in x 0.8 in / 3.3 cm x 2.0 cm
160 x 100 pixels
If you look for training "watches" - sporttester for running, nordic walking, cycling, rowing I can recommended to you. Forerunner 310XT finds GPS signals immediately, without problems among trees or buildings. There is a little bit slower. Really working 18-19 hours with GPS, nice and big and well-arranged display´s functions. Results processing (PC) with Google maps are also good.
GPS signal during swimming is not accurate (when Forerunner is on the wrist) but I very satisfied. I´ve bought 3 months ago. Very good training tool.