The ideal purchase for the Violin or Mandolin player; This Rocket clip-on electronic tuner makes tuning easy with its rotating clip so you can tune with comfort. It also has a tuning accuracy feature to help ensure you can tune quickly and perfectly and the string indicator allows the tuner to tune each string to the note you need. Simply clip onto your violin or mandolin and play each sting - the tuning is displayed o the easy to read display. Fully rotating head for complete versatility. String indicator picks up which string you are tuning. Model rt40v. Button cellbatteries (included) . Size H2, W9.8, D14.4cm. Weight 0.06kg. Manufacturers 2 year guarantee.