Features： Multiple Modes This electric tuner has 6 modes: Chromatic, Guitar, Bass, Ukulele and Violin, tuning range from A0 (27.5Hz) - A3 (1760Hz). Sensitive and accurate High precise detection and sensitive vibration clip, faster and more accurate even in noisy environments, perfect for beginner and professor. Large Color Screen Energy-saving LCD colorful screen with 360 degree rotation provide excellent visibility, very clear to read. Silicone Clips The tuner clip has adopted silicone in order to make sure it will not damage your guitar or other musical instrument in use. Specifications: Type: Electric Tuner Material: Plastic Quantity: 1 pc Color: Black A4 Frequency: 440Hz Tuning range: A0 (27.5Hz) - a3 (1760Hz) Power Supply: by a CR2032 button cell (included) Size: 25*38*45mm/0.98*1.38*1.77” Net weight: 20g/0.71oz Packages: 1* Electric Tuner 1* Battery 1*User manual