Korg AW2 Chromatic clip-on tuner
[aw2]

Clip-on chromatic tuner that attaches directly to a wind instrument or string instrument providing for cable-free tuning.
AW2G comes with a clip that's optimized for attaching to a guitar headstock.
Double ball-joint allows multi-angle positioning with far greater mobility for the display section.
Internal backlight ensures excellent visibility even on a dimly lit stage.
Energy-saving Auto mode automatically switches to the low-power Soft mode when no sound is present
Calibration function accommodates a variety of concert pitches.
Auto Power Off function maximizes the battery life, even if you forget to turn the chromatic tuner off.
Memory Backup function.
CR2032-type lithium battery.