FLAMMA FC04 Tuner Pedal for Electric Guitar and Bass Guitar

A high precision tuning pedal, up to ±1 points accuracy.
Works with most Electric or Electro-acoustic instruments including seven-string
guitar and bass.
High brightness LED indicator display, ensures being visible in various lighting conditions
Full-metal body in a portable size
True Bypass Design, preserves your guitar's tone and eliminates unwanted noise and hum 
Require a 9V power supply, purchased separately