This is a portable and universal tuner used for the tuning of guitar, chromatic, bass and ukulele. It will indicate tuning status by showing 3 sorts of color. Its tuning is up to ±0.5 cent. This tuner will be a good choice for you to keep your instrument in tune. Get one before supplies run out. Features: Small and exquisite appearance, convenient to carry. 360 degree rotatable design to match your need better. Indicates tuning status by showing 3 sorts of color(green, red and orange). With a clip, it is easy to fix on the instrument. Auto power off function, the device will turn off automatically if there is no signal present or operation in 3mins. It can be used for the tuning of guitar, chromatic, bass and ukulele. Specifications: Turning items：Chromatic, guitar, bass, ukulele Tuning : A0 – C8 : 440HZ Power: 1 * CR2032 battery (not included) : ±0.5 cent Display size: 2.7 * 1.5cm / 1 * 0.6in Product weight: 20g / 0.7oz Package size: 15.5 * 10.5 * 5.7cm / 6.10 * 4.13 * 2.24in Package weight: 33g / 1.16oz Note: Remove the battery if you don't use it for a long period. Package List: 1 * Electric tuner 1 * User manual (English & Chinese)