Thank you for viewing. I am selling this to organize my equipment. Operation has been confirmed, and there are no issues. I have used it for about 3 years, and a protective film is applied to the LCD panel to prevent scratches (see photo 3). Please comment if you have any questions. Adapters and batteries are not included. Guitar/Bass Tuner ■ Tuning Range: A0 (27.5Hz) - C8 (4186 Hz) ■ Tuning Accuracy: +/- 0.5 cents ■ Reference Pitch: A4 = 435 - 445Hz (in 1 Hz increments) ■ Input Impedance: 500 kOhm ■ Power: 9V battery or AC adapter (9V DC, sold separately) ■ Current Consumption: 45 - 50 mA (during normal use) ■ Dimensions (W x D x H): 72 mm x 122 mm x 45 mm ■ Weight: 300g (including battery) (Quoted from the official website)