Cherub ST-711 Skull Tuner for Guitar/Bass, black on: 1 centTuning mode: Built-in MIC, or optional pickupPower: 3V (CR2032 lithium battery)battery and strap clip are includedDimension: ca. 53(L) x 41(W) x 18(H) mmWeight: ca. 25 g ST-711 - creatively designed tuner for guitar and bass Glossy finish with a skull on the case Two-color LED gives clear indication of sharp or flatNew version software guarantees real-time tuning (response time: 30ms) Energy-saving mode maximizes the battery life Buit-in MIC and 1/4 in input jack Simple user interface makes tuning easyMetal clip allows you to clip your tuner on your guitar strap or beltTuning scale: Guitar, BassTuning range: A0 (27.50 Hz) - C6 (1760 Hz)Calibration: 440 HzPrecisi