The BOSS GX-100, equipped with a variety of effects, comes with a built-in tuner. Included are the power cord, instruction manual, and a separately sold Bluetooth connector. During a live performance, I accidentally stepped on it, and the leftmost knob in the fourth photo is stuck. However, it didn't affect the sound quality or functionality, so I haven't had it repaired. Functionality has been confirmed. - Model Name: GX-100 - Brand: BOSS - Type: Guitar Effect Pedal - Display: LCD Display - Input/Output Terminals: Multiple input/output terminals - Foot Switches: 5 foot switches - Tuner Function: Built-in tuner - Effect Types: Various effect types Thank you for viewing.