Best GPS Devices - Map cartridges / Data cards, 835 to 7000 Waypoints, 6 to 14 Hours Battery Life

'integrated Bluetooth'

'GPS performance is solid and re-routing times are in line with most other units.'

'one dynamic device'

'The Garmin Zumo 550 features a waterproof case and large buttons which make it easier for riders wearing gloves to access the buttons.'

'easy to use high definition charting'

'The new SolarMAX™ PLUS display renders brilliant detail in sunlight with the best wide-angle viewing ever available, while advanced pure-white LED screen/keypad backlighting fully adjusts to zero-dim for night fishing.'

'The Lowrance HDS-5 is display screen is bright, sharp, and generally easy to read.'

'The screen is visible in direct sunlight and is designed for wide-angle viewing.'

'expandable memory'