The tuner is great for beginners and professionals. It is fast, accurate, automatic and easy to operate. You would never play out of tune anymore with this tuner. 

Features: 
Clip-on design and support for 360°swivel rotation. 
Helps you to find the accurate tuning of your instrument. 
Comes with LCD screen, the string NO. and note name will be showed on the screen together when tuning.
The automatic shut-off function if no operation for about 3 minutes ensures that your battery works longer. 
Multi-instrument tuner, great for electric, acoustic bass, guitars, violin, ukulele. 

Specifications: 
Tuning Mode: Auto 
Tuning Items: Chromatic, Guitar, Bass, Violin, Ukulele 
A4 frequency: 440HZ 
Tuning Range: A0(27.5Hz) - C8 (4186.0Hz) 
Power Supply: 1 * CR2032 cell button (not included) 
Item Size: 4.4 * 3.5 * 3.5cm / 1.7 * 1.4 * 1.4in 
Item Weight: 25g / 0.9oz 
Package Size: 9.0 * 3.9 * 4.0cm / 3.5 * 1.5 * 1.6in 
Package Weight: 33g / 1.2oz 

Package List:  
1 * Mini Tuner 
1 * User's Manual(Chinese & English) 

Note: 
Battery is not included.