Onstage GTA4500 Rechargeable Clip-On Tuner - Black Needle Cartridge Case all you need is a

all you need is a small brass or aluminum hammer

Element: Condenser

Heavy-Duty 1

Depth:  24

Onstage GTA4500 Rechargeable Clip-On Tuner - Black Needle Cartridge Case all you need is aThe Onstage GTA4500 Rechargeable Clip On Tuner Black that delivers five and a half hours of tuning ability on a single charge from the included USB cable. The clip on transducer picks up vibrations through the body of the instrument, enabling it to work with electric or acoustic string instruments without the need for cables or amps, even in noisy environments. The high contrast backlit screen provides excellent visibility in any type of lighting and