FT-77 Clip Tuner (1 x CR2032)
Tuning mode: Chromatic Guitar Bass Violin Erhu - Two colors backlight: White change to Green when in tune - Tuning range: B0-B7 - A4 calibration: 440Hz - Tuning way: clip tuning automatically - Powered by 1 x 3V CR2032 battery (included) - Comes with English manual