The model number SM-R865U corresponds to the Samsung Galaxy Watch4 (40mm, LTE) variant. This model supports cellular connectivity via eSIM, allowing you to make calls, send texts, and stream music. With charger ⸻ Key Specifications of SM-R865U: Display: 1.2 Super AMOLED (396 × 396 pixels) Battery: 247 mAh Operating System: Wear OS 3 with One UI Watch Processor: Exynos W920 (5nm) Memory: 1.5 GB RAM / 16 GB storage Sensors: Heart rate, ECG, blood oxygen, body composition, accelerometer, barometer, gyroscope Durability: 5ATM water resistance, IP68 rating, MIL-STD-810G certified    ⸻ Release Date: This model was released on August 27, 2021, as part of the Galaxy Watch4 lineup. *For sellers protection- Due to scams (people buying electronics, claiming they dont work, keeping the working item and returning a broken one) all items are internally marked. Also testing and packing is filmed and kept until after the return period.