Without doubt the smallest and lightest sat-nav device in our round-up, the Garmin Nuvi 310 certainly packs in the features.

Music and photo functions might not always be a deal-breaker when it comes to choosing a GPS device but in this instance, the Nuvi makes sense of these extras by being eminently portable and having a comparatively lengthy (4-8-hour) rechargeable battery life.

Extra software Travel Kits are available too, including language and travel guides and even audio books. It’s also possible to connect to a mobile phone handset via Bluetooth and use the Nuvi as a hands-free set.

Perhaps more importantly, the Nuvi’s navigation software is excellent – easy to use, fast and accurate. The unit’s anti-glare screen is also bright and easy to view, even in daylight, and it is more secure than most, with a four-digit PIN code to protect against unauthorised use.

This article is part of a group test of satellite navigation devices.

See also: 
Garmin Nuvi 310
Magellan Roadmate 3050T
Medion GoPal PNA465
Mio Digiwalker C510E
Navman N40i
Navsure 300i
Novogo S700
Sony Nav-u Nv-U5 0T
TomTom One Europe
ViaMichelin X-950T
When sat nav goes wrong
Galileo project

A table of features can be read via our pdf download above.