YAMAHA Clip-on Tuner TD-38S Opened for photography, but it is an unused long-term inventory item from a store. Please purchase only if you don't mind. Features: Clip Color: Black Included Components: Clip Power Source: Battery-powered Number of Batteries: 1 AAA battery (included) [Target Instruments] Trumpet/Cornet, Trombone Tuning Accuracy: Within ±1 cent Pitch Measurement Range: A4=410~480Hz (in 1Hz increments) Tuning Range: A0(27.50Hz)~C8(4186Hz) Other Control Functions: Temperament: 12-tone equal temperament, Transposition Range: C, F, B♭, E♭ Power: 1 AAA battery