*  180-degree clip-on design.

* Small and exquisite appearance, convenient to carry.

* Vibration sensor allows accurate tuning even in noisy environments.

* Easy operation with two switches: one for on/off, the other for semitone tuning.

* Easy-to-read red green LED indicators show you which way to tune.

Specification:

* Model: WST-550G

* Color: Black

* Shell material: durable hard plastic

* Tuning range: C2(65.4Hz)-A4(440Hz)

* Tuning mode: Guitar

* Tuning precision: +/- 1 cent

* A4 range: 440Hz

* Detection Method: Clip

* Display mode: LED display

* Tuning method: Auto

* Power supply: 1 Piece 3V CR2032 Lithium battery (not included)