EASY TUNINGClamp the tuner on the guitar headstock and follow screen tips to loosen or tighten the strings. To tune other instruments like Ukulele, Violin and Bass, just change the corresponding mode. CLIP DESIGNA 360 degree rotatable LCD screen and adjustable padded clamp, providing best viewing angles and maximum positioning flexibility. HIGH ACCURACYHighly sensitive tuning ensures that your instrument is accurately tuned. The vibration sense design ensures reliability even with background noise. COMPACT SIZELight weight (only 23g) and mini size make it esay to store. Large screen with backlights makes it easy to read even in a dark environment. ONE button battery (CR2032) is needed. ESSENTIAL ACCESSORYThe tuner is an essential accessory for guitar players and other stringed instrument players. It's a caring little gift to guitar lovers.