This is a wind instrument tuner with sturdiness and durability, and can serve you for a long time. Reasonable design, fine workmanship, professional and practical, can provide convenience for your daily wind instrument adjustment, allowing you to repair the wind instrument yourself. 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 - This wind instrument tuner is made with safe materials, durable and will not be easily damaged. - High-sensitivity tuner, more accurate, precise, convenient and fast to ensure guitar pitch. - The ergonomic design structure will provide you with comfortable experience. - You can share this durable tuner with your friends and family members, because it is practical. - Simple and practical, can bring you a good experience, wonderful serving experience. Package list: 1 x tuner 1 x pickup clip