Best GPS Devices - Under $150, Geocaching

'most versatile navigator'

'Full-featured run, bike, and swim modes - well-suited to triathletes.'

'The 310XT can use audible signals and/or vibration alerts, to ensure that you are aware of your milestones. '

'Designed for triathletes, the 310XT collects data such as speed, distance and time for bicycling and running, and it is waterproof up to 50 meters for swimming as well.'

'You can purchase the Forerunner 310XT with or without a new (more comfortable than previous models) waterproof, soft-strap heart rate monitor.'

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

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

'Garmin Forerunner 301 Water-Resistant GPS Trainer is compatible with Garmin Training Centre software.'

'This training partner continuously monitors your heart rate, speed, distance, pace and calories burned so you can train smarter, more effectively.'

'robust, good-looking and fully featured device'

'GPS recording of data.'

'This high performance watch is easy to use and comfortable to wear when not training.'

'already popular Forerunner 405 model'