Simple yet very effective.
The Intellitouch PT2 Tuner attaches to your instrument with one hand. "Feels" instrument vibration making it ideal for noisy environments. Easy-to-read digital display. Fully automatic and chromatic. Works with just about any stringed instrument. Selectable A=440Hz, A=441Hz, or A=442Hz tuning references. Weighs less than 2 ounces. Operates 60 hours on 2 CR32 batteries.
An economical alternative to the PT1 Tuner (See recommended accessories box on this page), it works in the same manner without a backlit display; calibrates only to 440, 441, and 442; and offers a 60-hour battery life.