?Features:
A high precision tuning micro pedals， can be accurate to ±1 points.
Works with most electric or electro-acoustic instruments including seven string guitar and five string bass.
Display is visible even in strong light for it adopts 108 high brightness LED lights.
Small and exquisite design with true bypass switch.

Specifications:
Color: White
Material: Aluminium alloy !#!amp!*! PCB
Detection range: 12Hz-4186Hz (C8)
Input: 1/4" monaural jack? ?
Output: 1/4" monaural jack ?
Power requirements: AC adapter 9V DC
Current draw: 90mA
Item size: 9 * 3.5 * 3.2 cm / 3.5 * 1.4 * 1.3in
Item weight: 143g / 5oz
Package size: 10.5 * 6 * 4.6cm / 4.1 * 2.4 * 1.8in
Package weight: 170g / 6oz

Package List:
1 * Tuner pedal
1 * User manual (English !#!amp!*! Chinese)

Note:
When correctly tuned， the blue middle indicator light and the red lights on both sides will show on together.
When not in tuning status， the signal is true bypass， screen doesn't display