Purchased in May 2025 and used for about 5 months. I am selling it because my baby has grown and no longer needs it. It's a compact sensor, about 10g and the size of a cap, that doesn't burden the baby. It monitors rolling over, breathing, and body temperature. I will also include the batteries that were used and unused ones. 【Usage Environment】 ・ Non-smoking, no pets 【Pros】 ・Wi-Fi connection allows both parents to connect to their smartphones, enabling both to monitor the baby. Other companies' Bluetooth connections only allow one device to connect. ・The sensor itself is incredibly light and thin! The baby didn't mind wearing it and slept well. ・Because there is a gateway, it could be used at relatives' homes or during travel. It takes less than 5 minutes to set up. ・The baby in the app is cute. 【Cons】 ・There were more malfunctions as the diapers became smaller. One day, the malfunctions increased, and it took time to figure out the cause. If there are many malfunctions, it is recommended to review the diaper size. ・The battery cover is a little hard to open. This is unavoidable because the sensor is thin... 【Contents】 Baby sensor, gateway, instruction manual, two button batteries (one already installed in the main unit) ※No box. ■Product Specifications ・Brand: Comfortum ・Manufacturer: Tribute ・Manufacturer Model Number: CU-PS01 ・Baby Sensor Dimensions: 4.2 x 4.2 x 1.8cm ・Baby Sensor Weight: Approximately 12g ・Retail Price: 15,950 yen (tax included) ・Note: For use, a wired internet connection (installation-free router Wi-Fi is not acceptable) and 2.4GHz Wi-Fi are required. ・Other: Please check the Tribute product introduction site for detailed product features and FAQs. URL: https://comfortum.jp/product/cu-ps01/ #BabySmile #MovementSensor #Babysense #BabySmile #sense-u