Authentic product, app connected. There are no issues with sound. Due to damage, please use it for repair or parts. 【Condition】 Please be sure to check the photos for the condition. 【Included Items】 Only the items in the photos. ★ Cleaned & disinfected with alcohol. ※ As this is a junk item, returns and exchanges are not accepted. Please refrain from purchasing if you are sensitive to imperfections or seek perfection. ✔ Shipping Method It will be wrapped in bubble wrap and shipped via Yuu Yuu Mercari delivery. Please understand. ✨ I am not considering price reductions at this time. Thank you very much.