I have been after one for a while but the price seems to vary a fair bit(anywhere between £35 and £44 usually). At £29.99 I decided to bite and share the deal.
Here's the product description.
PolyTune Clip is much more than just a clip-on tuner, it's a revolution! Perfectly combining state of the art tuning technology with an unprecedented attention to aesthetics and functionality, PolyTune Clip gives a tune-up that's unmatched in speed, precision and grace. Not only is PolyTune Clip the best PolyTune we've ever made - we believe it's the best tuner by any measure. PolyTune Clip is designed to be your trusty tuning companion, whether you're going for a quick onstage tune-up or an ultra-precise setup of your instrument. PolyTune Clip sports three distinct tuning modes ranging from the game-changing polyphonic tuning mode that lets you tune all 6 strings at once, to your trusty chromatic tuner and all the way to an ultra-precise strobe tuner mode, which offers +/-0.02 cents of tuning precision. No matter what method you choose to use, the tuning trinity of PolyTune Clip will always guide you to pitch perfection. Developed with a luthier-like attention to detail, PolyTune Clip is the perfect combination of beauty and brains. With its carefully chosen high-quality components and stunning clean looks, PolyTune Clip is designed to complement you and your instrument, while containing the most advanced tuning technology to date. Through a massive engineering feat we managed to condense our proprietary PolyTune algorithm, shrink key components and increase battery life all while creating a tuner more powerful than any PolyTune released before it. The new tuning standard has just been defined and its name is PolyTune Clip! As musicians we are all different. We play different instruments in different styles on different stages around the world, which is why it's a shame that all clip-on tuners are so set in their ways - until now!
Poltytune Clip; Manual; Battery