Aroma&reg; AT-300C Clip On Saxophone Tuner / Wind Instruments Tuner for Sax, Clarinet, Flute, Woodwind Tuning Key: C, F, Bb, Eb; Detection Range: A0(27.5Hz)-C8(4186.00Hz). Pitch Range: 430Hz-450Hz; Dectection Accuracy: +-0.5 cent Easy clip-on tuner specifically designed for wind and chromatic instruments Fit for all woodwind insturements: saxophone, clarinet ,flute, oboe, etc. Power: 2032 coin battery, 1 piece(included), Dimension: 45.8mm x 35.8mm x 40.5mm, Weight: 24g