We have teamed up with top trolley brand Motocaddy to offer readers the chance to win a fantastic top-of-the-range S3 Digital electric trolley packed with new innovations - plus a Pro-Series high performance cart bag.

The re-styled S3 Digital is new for 2010 and incorporates a sportier look and a series of ingenious features that are exclusive to Motocaddy. These include:

• a ground-breaking USB port that allows a GPS unit to be charged directly from the trolley’s battery without impairing performance;

an exclusive security device that enables the owner to set a pin code to render the trolley useless to thieves;

a re-styled, multi-functional display screen and digital control panel that make the trolley incredibly easy to use;

a new multi-platform battery tray that is capable

of holding a variety of different batteries, including the long-lasting and super-lightweight Motocaddy Lithium or standard and extended range Panasonic batteries.

The prize - valued at £700 - will include a powerful Lithium battery and will come with a Pro-Series cart bag that features 14 full-length graphite-friendly dividers, spacious pockets, external wells for putter and umbrella and an exclusive anti-twist base that keeps the bag firmly in place on the trolley.

Answer the following question...
Which exclusive innovation allows GPS units to be charged on the new S3 Digital?

Closing date for this competition is 24th March, 2010.