SM401 is a feature-rich smartwatch that supports 4G Nano-SIM cards for independent calling Display: 2.01 to 2.2-inch Super AMOLED touchscreen
Connectivity: 4G/5G Nano-SIM card support for independent cellular use without a phone
Camera: Built-in front-facing camera for taking photos and video calls.
Battery: 450mAh capacity, providing approximately 3-5 days of standby time.