The KORG Sledgehammer pro is a high-precision tuner for guitars and basses. - Brand: KORG - Name: Sledgehammer pro - Type: Tuner - Compatible Instruments: Guitar, Bass Thank you for viewing. It is a beautiful item, almost unused, but please understand that it is a used item before purchasing. (Batteries included) [Model Overview] The KORG Sledgehammer Pro is a clip-on tuner featuring ultra-high precision tuning of ±0.1 cent and a new 3D visual meter. It has a cylindrical body with a shuttle switch, allowing for intuitive one-handed operation. Key Features • Ultra-High Precision Tuning: Achieves tuning accuracy of ±0.1 cent, which is very high for a clip-on tuner. • 3D Visual Meter: A highly visible three-dimensional meter that applies technology from rackmount tuners. • Shuttle Switch: The shuttle switch on the cylindrical body allows for one-handed operation of major functions. • 3 Meter Modes: Select from three modes: Regular, Strobe, and Half-Strobe. • High Hold and Flexibility: The clip and ball joint allow for stable attachment to various headstock shapes. • Other Features: Calibration function, auto power-off function, and memory backup function.