Aroma AC-05 Clip-on Guitar Tuner & Capo 2-in-1 for Guitar Bass Chromatic Multifunction Universal Exquisite Portable 2-in-1 tuner, works as tuner & capo. Small and exquisite appearance, it is convenient to carry. Super bright backlight, it can provide excellent visibility. High strength spring, clamp firmly without buzz or loss of tuning. Made of metal, excellent touch feeling and durable. High quality silicon cushion, protecting string well.