ACCURATE & FAST: Experience tuning with 1 cent precision. EASY TO READ: Deluxe LED display provides clear tuning results. IMPROVED ANALOG CIRCUIT: Delivers real signal with no loss of tuning accuracy. COMPATIBLE WITH MOST ELECTRIC INSTRUMENTS: Works with a wide range of instruments, including 7-string guitars and 5-string basses. SOLID CONSTRUCTION: Made from high-quality zinc alloy for durability and strength. Compact mini size saves space on your pedal board. DELUXE CHROMATIC TUNER: Suitable for a wide tuning range. LED indicator shows operating status and clear tuning results. Easy to read for accurate pitch detection. FAST PRECISE STROBE MODE: Offers +/- 0.1% tuning accuracy. EASY TO USE: Connect via audio cable to enter bypass mode. Press the bypass switch to activate tuning mode. Display shows no signal when inactive. Blue LED in the center illuminates when pitch is accurate. TUNING RANGE: 12Hz ~ 4186Hz (C8) INPUT: 1/4 inch Monaural Jack (Impedance: 100K Ohms) OUTPUT: 1/4 inch Monaural Jack (Impedance: 0 Ohms) POWER SUPPLY: DC 9V (negative center) WORKING CURRENT: 90mA WEIGHT: 268g (with box) DISPLAY INSTRUCTIONS: 1. Step on the footswitch to enter tuning mode. The indicator turns on and remains silent. 2. Display shows "-" when no signal is detected in tuning mode. Pitch and tuning indicators activate simultaneously. 3. The blue center LED lights up when the note is in tune. 4. Signal bypasses and display turns off when not in tuning mode. COLOR: Silver MATERIAL: Zinc alloy SIZE: 95 x 45 x 48mm PACKAGE CONTENTS: 1 x Guitar Tuner Pedal 1 x User Manual (English) Note: Light and screen display differences may cause slight color variation between the image and the actual item. Measurement error allowed is +/- 1-3cm.