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. Specifications Product: Boss TU-05 Rechargeable Clip-on Guitar Tuner Product Code: TU-05 Battery: Rechargeable Tuning Modes: Chromatic Guitar Bass Ukulele Adjustable Calibration: From 431 to 449 Hz Included: USB cable included for charging with a standard USB power adaptor