Chromatic Clip-On Digital Tuner – Accurate tuning designed for guitar, bass, violin, and ukulele with multiple tuning modes. 360° Rotatable Display – Flexible rotating screen allows easy viewing from different angles while tuning. Bright LCD Display – Clear digital screen shows tuning status instantly for quick and precise adjustments. Highly Sensitive Tuning Sensor – Detects vibration quickly to provide accurate pitch detection and stable tuning results. Wide Tuning Range – Supports tuning from 0A (27.5Hz) to 8C (4186Hz) for various string instruments. Compact & Lightweight Design – Small clip-on tuner weighing about 19g, making it easy to carry anywhere. Energy Saving Auto-Off – Automatically shuts down after several minutes of inactivity to save battery life. Specifications: Model: JT-01 Brand: JOYO Tuning Modes: Chromatic / Guitar / Bass / Violin / Ukulele C / Ukulele D Frequency: A4 = 440Hz Tuning Range: 0A – 8C Battery: CR2032 Weight: Approx. 19g