This project is a professional saxophone tuner, designed for adjusting the tone of the saxophone. It can be easily clipped to the saxophone and quickly change position without disturbing the tuning. Good thing for saxophone lovers, whether you are a beginner or an experienced player, this tuner will help you . Features -Color:Black -Material:ABS, plastic - Size: 10.00X6.30X1.80cm/3.93X2.48X0.71in - Size: 120.00X2.20X1.80cm/47.16X0.86X0.71in - Note: Without battery(2 x AAA battery). - A4 range: 430-450HZ - Product beat: -/4; 1/4; 3/4; 4/4; 3/8; 6/8 - Mode: Sound tuning mode; beat mode; and sound tuning mode - Beat error: <1% - Pitch error: 0.1% - Power supply: 3V - Small power saving design, clip-type radio, more accurate, pick up clip line length 120cm. - Large LCD display, easy to view during tuning, clear LCD professional display, easy to control. - Universal electronic metronome for wind music, suitable for clarinet, saxophone, flute, tuba, trumpet, etc. - Three major modes: sound proofreading mode, beat mode, and sound fixing mode. - Plastic upholstered button, feel comfortable, premium shell material, safe and not easy to crack. Package list: 1 x tuner 1 x pickup clip