A compact chromatic clip-on tuner equipped with a built-in microphone and vibration sensor. - Brand: SEIKO - Model Name: STX1N - Type: Chromatic Clip-on Tuner - Features: Built-in microphone, vibration sensor switch - Range: A0-C8, 12 semitones - Tuning Range: C4-B4 - Size: 55mm x 60mm x 50mm - Power: CR2032 x 1 Thank you for viewing. Please check the following URL for details. https://www.google.com/url?q=https://www.sii.co.jp/music/products/tuner/stx1n.html&sa=U&sqi=2&ved=2ahUKEwjE_PPZ052NAxXhsVYBHUH9GpYQFnoECB8QAQ&usg=AOvVaw2MsajjC_AO2ZRLD6vZ8pNg