KLIQ UberTuner - Professional Clip-On Tuner for All Instruments (multi-key modes) - with Guitar, Ukulele, Violin, Bass & Chromatic Tuning Modes (also for Mandolin and Banjo) - Walmart.com
Boss TU-3 Chromatic Tuner
Amazon.com: Guitar Tuner Rechargeable Clip On LED Color Display Tuner for All Instruments - Guitar, Violin, Ukulele & Chromatic Tuning Modes, Fast & Accurate, Easy to Read, Professional and Beginner : Musical