35708= blue// 35709=red//35710=silver//The new colorful GU30 guitar tuner from Ibanez features hands-free tuning. This no hassles auto tuner is fast and accurate and works with guitar, bass, or almost anything that shares the same tuning. It even has seven tuning notes for 7 string guitars. The GU30 guitar tuner has a mic built-in for fast and accurate metering. The Ibanez GU30 guitar tuner comes in three attractive colors: blue, red and silver. Just select your color and add it to your shopping cart. Auto and Manual tuning Tuning Range: A0 - C8 Calibration: 435 - 445 Hz Flat Tuning: 1 to 5 semi tones below displayed note Sound Button: sounds a reference tone to the internal speaker Accuracy: +/- 1 cent Indicator: LCD and LED's Input: 1/4" jack, built-in mic Output: 1/4" jack Power: 3V battery - AAA size x 2