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Battery Charging

Operation

Features

Chromatic Tuner with Guitar, Bass, Ukulele and Violin modes.

Built-in rechargeable battery allows over 10 hours continuous 

use per charge.
High contrast color display with strong and flexible clip for the 

best viewing angle.
Auto Power off function for maximum battery life.

When the battery level is running low, please use the included USB

charging cable to recharge the unit.

1. Power/Mode Button

     

Press and hold this button for 2 seconds to switch the device on 

              

     

or off. When the device is on, short press this button to switch

     

between the four different tuning modes.

2. b/Open button

     

When the tuner is in Guitar or Bass tuning modes, short press this

     

button to switch between the open and flat tuning modes: open G,

     

open D, open E, or half step flat (b) and whole step flat (bb).

3. Tuning Visuals

C(Chromatic)

G(Guitar)

Pitch is flat

In Tune

Pitch is high

B(Bass)

V(Violin)

U(Ukulele)

This device uses Li-Po battery, to 

reach the maximum battery life, 

please charge it before using it. 

If the device will not be used for 

a long time, please charge it at 

least once every 3 months to 

maintain battery health.
Input: DC 5.0V, <=100mA 

Output: 3.7V/180mAh Polymer 

Li-ion battery, <=15mA

NOTICE:

4. Note Detection:

     

a) Chromatic : C  

#

C   D   E   E   F  

#

F    G  

#

G   A   B   B 

     

b) Guitar : 6E    5A     4d     3G     2B     1E

     

c) Bass : 4E     3A     2G     1D

     

d) Violin : 4G    3D     2A     1E

     

e) Ukulele(C) : 4G    3C     2E     1A

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