Farley's PocketTones Violin Tuner The Pocket Tones are a handy, durable and compact device, which may be carried in your pocket or purse as a key fob; or they can fit conveniently in an instrument case for accurate tones whenever you need them. Can also be used for Mandolin Electronic notes to tune your instrument Train your ear for the perfect pitch Convenient key chain design Durable, Accurate, Easy-To-Use Batteries included (AG13) 10002 Tell us what you're looking for! Immediate Response! Toll Free 877-712-4747 REQUEST INFORMATION Your Name: Product Interested In: Your Email: Your Phone (optional):