PRS Rechargeable Clip-On Headstock TunerTune Untethered PRS Guitars Rechargeable Clip On Tuner is easy to use, stunningly accurate, and wholly reliable. A single charge on this tuner will last weeks, and, with the provided USB cable, recharging is simple without the need for batteries. The no slip clip anchors a 360 rotating arm for guaranteed readability. And, best of all, the PRS Rechargeable Clip On Tuner proudly stands with the most accurate tuners in the market with . 5cent accuracy in