Providence System Tuner STV-1 JB BK, Effect Pedal for Electric Guitar, Floor tuner, All-in-one Vitalizer Buffer, Router, Splitter and Pitchblack Tuner (developed in cooperation with KORG), Detection range: E0 (20.60 Hz) - C8 (4186 Hz), Chamber sound frequency: A4 = 436 - 445Hz, Measurement accuracy: +/- 0.1 cent, Battery life: approx. 60 hours, Push buttons: Calib, display, Switch: Vitalizer / Thru (slide switch), LED: Effect On, Footswitch: Effect On / Bypass, Input (6.3 mm jack), Output (6.3 mm jack), Send (6.3 mm jack), Return (6.3 mm jack), Power adapter connector (female connector 5.5 x 2.1 mm, negative pole inside), DC Out (female connector 5.5 x 2.1 mm), Current consumption: 12 mA (with 9 V battery) - 27 mA (with power supply), Power supply via 9 V battery or 9-18 V DC power supply (matching power supply Art.#409939#, not included), True bypass, Dimensions (W x D x H): 76 x 115 x 50 mm, Weight: 220 g, Colour: Black, Made in Japan