Thank you for looking. This is a Sanrio Mewkledreamy security alarm. It was purchased as a spare and has only been used once for a short time. I will also include button batteries purchased separately. No other accessories included. Size: Width 5.4 x Length 19 x Height 3 cm Volume: Loud (measured 90db at 1m in front) Power source: Alkaline button batteries / LR44 x 3 (sold separately) Continuous alarm time: 89 minutes If you have any questions, please leave a comment.