Slimmer and stickier: Sony's latest bid to crack sat-nav

Jumping in right between Sony's existing sat-navs - the posher NV-U70 and fatter NV-U50 - this new navigator promises to be the stickiest and slimmest

Jumping in right between Sony's existing sat-navs - the posher NV-U70 and fatter NV-U50 - this new navigator promises to be the stickiest and slimmest yet.Compared to the U50 which it's replacing, the boxfresh U51 is 32.8mm deep, noticeably thinner than its predecessor's 43mm. The mount has been upgraded, too, using a special gel which is apparently sticky even in cold temperatures. Good news for cold drivers with Japanese snow monkeys hanging off their sat-nav's windowscreen mounts.HandyThis newbie's also the first in Sony's budget arena to add Gesture Command, a grandiose name that should appeal to megalomaniacs but in reality means accessing quick functions by drawing symbols on-screen with your finger. It first appeared on the NV-U81, which isn't on sale yet in these isles.Features are otherwise basic and won't be troubling TomTom - as you'd expect for a sat-nav slated for a sub-£300 price tag - with UK and Ireland maps, that 3.5in touchscreen, a six hour battery life and a month's free sub for speed camera updates.You won't find any MP3 playback or other frippery here. Though you might, judging from Sony's photo, find the U51 performs exceptionally well in woodland driving scenarios. We emphasise: might.

Essentials

Sony NV-U51Price: £TBA, expected sub £300On sale:DecemberContact: SonyRelated links:Sony's sat-nav rangeRelated stories:Sony’s finger-friendly sat-nav