1To assure proper note selection, scale is arranged in sequence and clearly marked by note notations on top covers. 2Suitable for most music instruments" tuning basing on chromatic. 3It also can be used as an instrument to develop the children"s pitch. 4Made of premium materials, sensitive and durable to use. 5Practical accessory for musician or music instructor. Features: To assure proper note selection, scale is arranged in sequence and clearly marked by notenotations on top covers. Suitable for most music instruments" tuning basing on chromatic. It also can be used as an instrument to develop the children"s pitch. Made of premium materials, sensitive and durable to use. Practical accessory for musician or music instructor. Specification: Material: Metal + Plastic Color: Silver Size: Approx. 6.5 * 7 * 1.5cm / 2.56 * 2.75 * 0.59in Weight: Approx. 62g Packing List: 1 x Chromatic Tuner with Storage Box