Best GPS Devices - 1 to 2 inch Screen Size, 100 x 64 Resolutions, USB PC Interface

'The 401 is also compatible with Garmin heart-rate monitors and cadence sensors.'

'Featuring a built-in barometric altimeter for visualized information on elevation and air pressure levels, this model comprises a rugged waterproof design for reliability in all outdoor conditions.'

'the 401 is compatible with Garmin heart-rate monitors and cadence sensors.'

'This unit is very lightweight, weighing in at 2.8 oz.'

'This unit is very lightweight, weighing in at 2.8 oz.'