Seiko Chromatic Tuner ST01

Seiko ST01 Chromatic Key Ring Tuner

A handy personal tuner complete with keyring, the Seiko ST01 goes wherever you go, so there's no excuse to be out of tune. Ultra compact with a stylish metal faceplate, it resembles a smart USB stick at just 6cm long, making it a genuinely attractive, discreet tuner suited to any instrument.

Operation is refreshingly simple: press the power switch to turn it on, then input the sound of your instrument into the built-in microphone. It indicates the note name and deviation in cent increments across a wide A0 to C8 tuning range, with a clear LCD display and an LED light that changes colour once you're in tune. An automatic power-off after 2 minutes of inactivity helps preserve battery life.

Specifications