Core "Chip" Technology: SOLO ST-22 metronome tuner utilizes advanced Core "Chip" Technology to accurately recognize pitch, providing precise pitch proofreading. With an adjustable frequency range of 430Hz to 450Hz. It supports both manual and automatic tuning modes, making it easy to operate with pickups. Treble and Bass Clef Switching: Users can manually switch between treble and bass clefs. The tuner can follow user-generated sounds, displaying notes and pitch deviations in real-time. It supports a wide range of instruments including guitar, bass, violin, and ukulele. Variable Tone Shielding: Experience improved pitch recognition accuracy with variable tone shielding feature. This innovative technology shields tone change interference, reducing external noise interference on audio signals. You can trust our tuner to deliver accurate pitch readings every time. Free Selection of Practice Modes: Users can freely select CLAVIER and MODEST modes according to their needs. In MODEST mode, users can choose desired tuning, allowing the tuner to compare the user's voice with natural key sounds. Follow Pronunciation Mode: When the user follows the pitch of the tuner to pronounce, the tuner will detect their pitch and send out the corresponding accurate pitch for users to follow and switch at any time, enabling real-time pitch comparison. Specifications: Brand: SOLO Battery: Built-in rechargeable lithium battery Volume: 4.88 x 2.5 x 0.71inch / 124 x 63.5 x 18mm(when being folded) Weight: 3.63oz / 103g Colour:Black Material:plastic Package Contents: 1 * Digital Giotar Tuner 1 * Type C Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.