Purchased in 2026.1, used only about 4 times. I gave up using it because my baby started sleeping on their stomach no matter how many times I put them on their back. The cable and spare cap are unused. Official description below: "AKOi Heart" is a baby care alarm that can detect a baby's movements, rolling over, and when it's time to change their diaper. Simply charge the main unit, download the dedicated app, and turn on Bluetooth to start using it. It's lightweight and thin, so babies won't mind wearing it. Also, the alarm doesn't sound from the main unit, but is notified to your smartphone, so you don't have to worry about the alarm waking the baby. ■ Target Age Motion detection: Newborns and up Stomach sleeping detection: 3 months and up For babies who have started rolling over and cannot return to their back on their own. Diaper detection: Alarm sounds when there is about 30cc or more of liquid. ※ The amount of urine per urination is about 5-10ml for newborns and about 15-30ml around 3 months old. ■ Product Specifications Power: Rechargeable coin battery LIR2032, 40mA Charging method: micro USB, can be used for 7 days on a full charge Operating environment: Temperature 0-45 degrees Celsius, Humidity 10-85% Compatible OS: Android 5.0 or higher, iOS 11.0 or higher Size: 3.9 x 2.3 x 0.9cm Country of manufacture: Korea Package contents: AKOi Heart main unit, attachment cap, instruction manual, warranty card, charging cable ※ AKOiHeart is not a medical device. It is an electronic device with a built-in sensor. AKOiHeart Akoi Heart Baby Care Alarm Motion Sensor Childcare Support Stomach Sleeping Diaper Baby Alarm Monitor Baby Alarm Newborn Rolling Over Detection Movement Detection Baby Shower Gift Gift Stomach Sleeping Sensor