About ANILER : 1.30 Days Money-back Guarantee For Any Reason. 2.Each products will be tested one by one before shipping .and all the item will be shipped directly from Amazon’s Warehouse . ensure to received it asap 3.Free user support. If you have any problems about the product , pls Contact our friendly Service team for quick solutions , here will respond to u asap. Feature: 1.New brand, high quality, easy use 2.Turning 360 degree freely and Adjustable view angle. 3.An extra large LCD screen, Super anti-interference. 4.Handy compact digital clip-on style.Sensitive and stable. 5.Tuner pick up the sound by vibration,Easy to clip onto any stringed instrument. Specification: 1.Tuning range: A0(27.5Hz)~C8(4186Hz) 2.Tuning scale: Chromatic, Guitar, Bass, Violin, Ukulele 3.Detection Accuracy: +0.5 Cent 4.Pitch Range:440Hz 5.Warranty: three year 6.Power Supply:one 2032 coin battery 7.Demensions: 80x48x27mm 8.Weight:23g 9.Color: Black Package includes: 1 x Tuner 1 x user manual 1 x coin battery 3 x picks