Jahn TLA CTS-7-CE, Tuner Especially for Piano and Harpsichord, With data cable and PC software, Working range: 9 1/2 Octaves, Frequency range: 20 to 14,000 Hz, Chamber sound from 220 Hz - 880 Hz, Cent setting +/- 100 cents, Cent resolution: 0.1 cents, Automatic cent measurement, Chamber sound resolution: 0.01 Hz, Illuminated display with 2 x 16 characters, Pre-programmed 28 historical tunings, Memory for own instrument programs, Memory for your own historical tunings, Power supply via battery and charger, Operating time with one charge: Approximately 14 hours, Charging time: Approximately 14 hours, Battery: 4 x Mignon NiMh 2500 mAh included, Mains / Charger: 7.5 V 350 mA DC stabilized, Dimensions: 125 x 97 x 50 mm, Weight: 350 g, Delivery in case made of beech wood