The Snark Rechargeable features all the same tried-and-true Snark tuner features with a new, USB-charging capacity. A single charge on this amazing tuner lasts weeks — no batteries needed! And like all Snark tuners, it comes with their beloved hyper-tuning software for fast, reliable tune-ups. The Snark Rechargeable also features new vulcanized rubber joints for reliable, rugged clip-ons night after night. Finally, this clip-on tuner also has a 360-degree rotating arm!