The boss tu 05 rechargeable clip on guitar tuner is a modern rechargeable tuner for guitarists bassists and uke players too. Offering modes for all three instruments as well as a chromatic mode for an immensely precise tuning experience. But thats not all. This quality boss tuner also offers flat tuning over a range of three semitones down making it a super choice for all you players who like it low and heavy. Plus with its rechargeable battery you have up to ten hours of continuous use. Youve even got a usb cable included that works perfectly with a standard usb power adapter.to mount the boss tu 05 is secure and easily adjusted for the perfect viewing angle. Theres also a large incredibly high contrast colour display that gives you superior visibility both in dimly lit venues and bright sunshiny days its top notch. Boasting immense sonic accuracy and world renowned quality this is the ultimate way to achieve efficient precise tuning.