Life-proof 90dB child safety alarm, compact size of 2cm width and 14cm length. - Color: Yellow - Volume: 90dB - Batteries: Uses 3 LR44 batteries - Waterproof: Life-proof - Purpose: Child safety alarm This was a gift, but my child didn't like the color, so they haven't used it. The purchase date is unknown. Although unused, please understand that it has been stored at home. Thank you for looking.