Crayon Shin-chan wolf-proof device クレヨンしんちゃんcriminal-proof ブザーしんちゃんHKD $ 1 9 8——✨ Please remember to like when you pass by❤️We will try our best to protect the wild!😽✨Output volume: about 85dB (measured at 1 meter in front) continuous Blow time: about 20 minutes Battery: CR2032*2 Body size: about 46mm〰〰〰