TEKO Pocket/Key Ring Tuner

Integrated microphone for acoustic tuning
1/4″ input jack for electric tuning
Key ring with integrated attachment
On/Off & Tuning Mode switch
Tuning modes: B (flat), # (sharp), or standard (concert pitch)
Tuning Range: A0 (27,5 Hz) to A3 (1760 Hz)
A4 frequency range: 440
445Hz
Power: 3V (2 x button-style AG13 batteries)
ROHS compliant

Dim (HxLxD): 22 x 52 x 20 mm / 0.9 x 2 x 0.8 in