Conserve your batteries with the GTA4500 rechargeable clip-on tuner with up to 5 and a half hours of use on a charge. The tuner works with a piezo that collects the vibrations of the instrument, which allows it to operate without the need for amplifiers or cables, even in noisy environments. The four-color, high-contrast LED display provides excellent visibility and its rotating neck adjusts to any angle. Discreet and light weight, it stays attached throughout your practice or playing. Includes the cable to recharge it.