199912 Quantity 1 Piece(s) Color Black Material Plastic Compatible Models Guitar， bass， ukulele， violin Application Tuning Other Feature 1.3" LCD; Tuning: chromatic， guitar， bass， ukulele， violin; tuning way: clip， tuning range: A0(27.5Hz)~C8(4186Hz)， precision: +/-cent， calibration: A4=440Hz， power by 1 x CR2032 (included) Packing List 1 x Smart tuner 1 x CR2032 1 x English / Chinese user manual