Description from Amazon USA :
- Top-Ranking Design.Large 2.25 inch LCD Display.Convenient Operation.Sensitive and Accurate Tuning.
- Metronome Mode: Tempo range: 30-280bpm.Beat:0,1,2,3,4,5,6,7,8,9,.Tuner Mode: A4 Calibration:410-490Hz.Tuning Accuracy: 1 Cent.
- Chromatic.Tone Generator: Range:C,D,E,F,G,A,B,bD,bE,#F,bA,Bb and can change when A4=410-490.Color: Black.
- Power: 3V ( two pieces of No. 7 Battery ).Volume: 11.5 cm ( W ) x 6 cm ( H ) x 1.5 cm ( D ).Weight: <=100 g.
- Detailed Using Instruction.Colored Display Package.Two AAA Batteries Included.