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)