Easy Play No Sore Fingers Acoustic Guitar Package 38 inch Parlor Size Natural Finish with Auto Tuner - Walmart.com
TronicalTune: A robot tuner for almost any guitar (hands-on) - CNET
Amazon.com: Eno ET-33 Mini Auto Chromatic Acoustic Guitar Tuner Clip on for Guitar Bass Violin Ukulele, 360 Degree Rotate, Chromatic Tuner : Musical Instruments