This is the Series 9 cellular model, 45mm size. It has eSIM functionality, allowing for various features even without a paired iPhone. It's recommended for those who often use their watch independently! Using mobile data, you can: • Make and receive calls • Send and receive SMS/MMS messages • Send and receive iMessages • Receive notifications (LINE, email, etc.) • Use Siri (internet searches, etc.) • Stream Apple Music and Podcasts • Navigation with Maps Pretty convenient, right? Check it out! This is an Apple Watch Series 9 (GPS + Cellular) 45mm with a maximum battery capacity of 89%. The included band is unused. - Model Name: Apple Watch Series 9 (GPS + Cellular) - Battery Condition: Maximum Capacity: 89% - OS Version: watchOS 26.0.2 (23R362) Thank you for looking.