Strings Instruments: Acoustic/Electric Guitar, Ukulele, Violin, Bass, Banjo Standard Tuning - Easy to navigate and smooth touching; Small and compact size one-handed swivel clamp. Fast & Accurate: Tuning in seconds!Tuner's advanced Mini Processor and highly sensitive Sensor will your instrument is accurately tuned in a flash. Easy to Use & Highly Sensitive: Turn it on, clip it on, and you're ready to tune. Since the tuner detects the pitches directly from your instruments' vibrations, so the ambient room noise will never get in the way. Reliable: This tuner was built to last. This cute tuner will great helper and get your loved instruments in tune every time in seconds. Easy to Read & Adjustable Screen: is a vertical, full color display with limitless viewing angles. The dual swivels makes mounting perfect for left handed or right handed players anywhere on the headstock. Colour:black Material:plastic Package Contents: 2 x tuner 1 x English manual 1 x battery Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.