Mizukosha Co., Ltd. This is a handheld practice device for voice training, used for practicing shigin (Japanese poetry chanting). It's new, but I don't know the model year. Features: ① The pitch of your voice is displayed by LED lights, allowing you to check your intonation. ② You can hear accompaniment sounds corresponding to your voice through the earphones, which is convenient for self-study. ◆Product Description◆ 【Manufacturer】Mizukosha 【Model Number】VT-10 【Size】Width 18cm x Depth 9cm x Height 3cm 【Condition】・Currently, power-on confirmed, operation confirmed (number setting - pitch guide - LED display - others). Power-on confirmed. 【Included Items】 Batteries included. 9V. Earphones included. Warranty and instruction manual included, but the warranty period has expired. Thank you for viewing.