Many thanks for the advice
Thanks everyone for the advice it is easy to get confused when looking at these devices on the market so we have decided on the .Magellan 610 Explorer
Core Outdoor Navigation
Rugged and waterproof, the eXplorist combines high sensitivity GPS reception with aesthetic mapping and accurate navigation. Find your way using more than 30 navigational data fields. Create waypoints, record tracks, and route from point to point.
Experience Recording
Integrated 3.2 mega-pixel camera, microphone, and speaker enables outdoor enthusiasts to record geo-referenced images and voice notes. Relive your outdoor adventures on the device, on your computer, or share with others on various online communities.
Superior Maps with 3D Perspective View
The eXplorist series packs some of the most accurate maps into the palm of your hand. The World Edition map allows for 2D or 3D viewing angles and covers the globe with details roads and land use areas. Summit Series is a new breed of topographic outdoor maps covering various regions with high level of detail. City Series will add turn-by-turn routing to your handheld GPS receiver.
3.0" Touch Screen and Button Controls
The best of both worlds, the eXplorist combines the user friendliness of a touch screen with the reliability of two customizable hard buttons. Program the hard buttons to your two favorite or most used functions and ensure quick reaction while wearing gloves or in just in a rush.
Paperless Geocaching
Download and view more than 20 unique characteristics of each cache and view, search, filter on the device. Details include name, location, description, hider, size, difficulty, terrain, hint, and recent logs created by other geocachers.
16 Hours of Battery Life
Powered by two AA batteries, the eXplorist will last up to 16 hours under normal conditions. To help conserve power, use the suspend mode to turn off the device but maintain GPS tracking. You can also adjust power management settings to your preference.
OneTouch™ Menu
Magellan’s award winning OneTouch™ favorites menu is now on our handheld devices. It provides instant access to bookmarks of your favorite places. Set your home, camp, and car. Easily re-assign a new location for each new adventure. 12 customizable icons to create personalized searches, save unique locations, or assign quick access to your favorite screens
3-axis Electronic Compass & Barometric Altimeter
Always know exactly where you are going, which direction is north, and your accurate altitude about sea level with built-in sensors. Know the direction to the geocache while standing still. Measure barometric pressure over time to track changing weather conditions. Use a number of different digital compasses to always understand your cardinal directions.
World Edition Pre-loaded Map
The World Edition includes a complete road network in United States, Canada, Western Europe, and Australia and major roads throughout the rest of the world that provides cartographic orientation in almost any location. This unique preloaded map also includes water features, urban and rural land use, and a realistic shaded relief background.
Dimensions (Metric)65.3mm x 128mm x 36.8mm
Weight (Metric)195g
Battery Type - 2xAA
Battery Life 16 Hours
Camera - Yes
Microphone - Yes
Waterproof - IPX-7
Speaker - Yes
Available User Storage500 MB
CPU - 400MHz
Expandable Memory - microSD
Temperature Range (C)-10C to 60C
Suspend Mode - YesI
nternal Memory - 4 GB
SCREEN
Display Resolution, WxHWQVGA, 240 x 400
Screen Size - 3.0"
Display Type - Color, Transflective
Touch Screen - Yes
GPS & SENSORS
GPS Accuracy - Up to 3-5 meters
High-Sensitivity GPS - SiRFstarIII™
Antenna Type - Multidirectional Patch
3-Axis Electronic Compass - Yes
Barometric Altimeter - Yes
WAAS/EGNOS/MSAS - Yes
MAPPING & NAVIGATION
Preloaded Maps - World Edition + Summit Series CA
Uploadable Maps - Yes
Points of Interest - T
Turn-by-Turn Routing - Yes
Vertical Profile - Yes
Area Calculation - Yes
Hunt & Fish Calendar - Yes
Sun & Moon Information - Yes
Coordinates Systems & Datums - Yes
User Grid - Yes
OneTouch Favorites Menu - Yes
Audible Proximity Alarms - Yes
Silent Proximity Alarms - Yes
Navionics® Map Compatible - Yes
USER GENERATED CONTENT
Accepts GPX Files - Yes
Waypoints - 2000
Routes - 200
Geocaches - 10000
Legs Per Route - 500
Paperless Geocaching - Yes
Picture Viewer - Yes
Tracks - 200
Points Per Track - 10000
User Data Online Sharing - Yes
INTERFACE & COMMUNICATIONS
Communication Protocol - USB Mass Storage
USB Port - Yes
NMEA Output - Yes
PC Compatible - Yes
*Vi