Item Type: Clip On Guitar Tuner <br>Material: ABS <br>Tuning Programs: 12 Equal Temperament; Guitar; Bass; Violin and Ukulele <br>A4: 440Hz <br>Battery Type: 1 x CR2032 Button Battery (Ships without Battery) <br>Color: Black<br>1、SENSITIVE AND ACCURATE: Clip on tuner with advanced microprocessors and highly sensitive sensors will ensure that your instrument is tuned quickly and accurately. <br>2、BACKLIGHT: This clip on tuner has a two color backlight, green for in tune and white for out of tune. Easy to use, turn it on, clip it on, and you're can tune. <br>3、ANTI INTERFERENCE: Because guitar tuner detects pitch directly from the vibration of the instrument, it will never be disturbed by ambient room noise. <br>4、MULTI MODE: This digital tuner features 12 equal temperament, guitar, bass, violin, and ukulele tuning programs to meet your different usage needs. <br>5、PORTABLE AND DURABLE: The electronic guitar tuner is compact and lightweight, easy to carry around for practicing or performing, Made of ABS material, wearable and durable.1 x <br> <br>Clip&nbsp;On&nbsp;Guitar&nbsp;Tuner<p>1 x&nbsp;Instruction Manual</p>