KORG ST1K Synthesizer Tuner Silver

Scale: 12 notes, equal tuning, detection range: A0 (27.50 Hz) to C8 (4186.00 Hz) Chamber tone frequency: 436 Hz - 445 Hz (in 1 Hz increments), tuning accuracy: accurate to ±0.1 cent Connections: input (6.3 mm jack, mono), output (6.3 mm jack, mono), switch: power/display/calib, power supply: 2 AAA batteries (not included) Battery life: approx. 50 hours (AAA manganese dry cell batteries, continuous A4 input, display mode "standard") Dimensions (W x D x H): 99mm x 65mm x 16mm Weight: 83 g (including batteries), box contents: adapter 3.5 mm mini jack to 6.3 mm jack (mono)