The AW-LT100 provide stunning battery life with approximately 100 hours of operation using a single AAA battery. The body s lightweight design features triangular shuttle switches that allow intuitive operation. The AW-LT100T is equipped with a small clip that s optimized for attachment to the bell of a trumpet cornet or trombone. You can easily position the tuner for best visibility allowing you to stay aware of your own pitch while you practice. KORG s AW-LT100 line of clip-on tuners will get in you tune faster and keep you in tune longer than any other clip-on tuner!