Features:

Chromatic tuner
Suitable for wind instruments: C, F, B, E
Input via built-in microphone or external clip-on pickup with 6.3mm jack

Specifications:

Power supply: 3Vdc (2 x AAA) A4
Reference A4 = 440Hz
A4 frequency: 435 - 445Hz
Tuning range: A2 (27.5Hz) - A3 (1760Hz)
Dimensions: 96 x 59 x 16mm
Weight: 70g