Screen size: 1.9 inches Brand new, unused. Taken out of the box once for photos and to check functionality. Please refer to the images for the instruction manual, which shows the various functions. I downloaded the dedicated app and confirmed that it works without any problems. The app is well-featured, and the screen touch sensitivity is good. Also, the 1.9-inch display is large and bright, making it easy to see. It is unknown how many days the battery will last. Japanese instruction manual included. It is written in considerable detail. [Product Contents] Smartwatch body Silicone band Charging cable Instruction manual Original box That's all. If anyone is interested, please feel free to inquire.