AROMA AT-800 Clip-on Tuner Rechargeable Mini Portable Digital Tuning Device Multi-function TFT Color Display Rotating Clip Electric Tuner for Chromatic Guitar Cello Saxophone Trumpet Features: Simple and up-to-date design, convenient to carry. Small compact product size, two buttons operation. Clip-on design with large opening for easily fixing on the instrument. Bright TFT color screen display, accurate and fast tuning with dynamic display. Dual 360 degrees & 180 degrees rotatable clip for best viewing angle. Built-in rechargeable battery, quickly charges with included cable. 3 minutes auto power-off function saves energy. Tuning items including guitar, cello, saxophone, trumpet, etc. Specifications: Material: ABS Tuning Item: Chromatic Tuning Note: A, A#, B, C, C#, D, D#, E, F, F#, G, G# Detection Range: A0(27.5Hz)~C8(4186.00Hz) A4 Frequency Range: 410~460Hz Tuning Cents Indicator Range: -50~50 cent Tuning Accuracy: ±0.5 cent Power Supply: Built-in rechargeable battery Battery: 3.7V 90mAh Charging Time: Approx. 1.5 hours Duration: Approx. 3 hours Auto-off: 3 minutes Charging Voltage: USB, 5V Item Weight: 18g / 0.641oz Package Weight: 47g / 1.67oz Package Size: 11.5 * 6 * 3.3cm / 4.53 * 2.36 * 1.30in Package List: 1 * Tuner 1 * Charging Cable