Features:
This portable tuner can be also used as a watch.
It is a great assistant to keep your chromatic, guitar, bass, and ukulele in tune.
A4 frequency from 430-450Hz to meet your better need.
360 degree rotatable head offers you the best viewing angle.
With a watchband, it is easy to fix on the instrument.

Tuning Accuracy Indicator:
Flat: The sign is on the left;
Sharp: The sign is on the right;
In-tune: The sign is in the middle.

Specifications:
Color: White / Black / Yellow / Lemon green (optional)
Tuning scale: Chromatic, Guitar, Bass, Ukulele
Flat: N/A, b, bb
A4: 430-450Hz
Power: 3V CR2032 lithium battery (not included)
Package size: 5 * 3.5 * 3cm / 2 * 1.4 * 1.2in
Package weight: 20g / 0.7oz

Package List:
1 * Tuner
1 * Watchband