This is the latest model, so the battery has a capacity of 1000mAh. Please download the FitCloudPro app from the App Store or Google Play to your smartphone. It has too many functions to use them all. It's multi-functional, with features like walking, sleep tracking, heart rate monitoring, blood oxygen level measurement, and sports recording. I haven't used the sports recording function, so I don't know about that, but the other functions work normally. It's a gray silicone band sports smartwatch, comes with a USB cable and instruction manual. I haven't used it much, so it's almost new and in good condition. The battery is 1000mAh, so depending on the settings, it should last about a month. After charging is complete, it seems like you should leave it charging for about an hour to ensure it's at 100% before using it. I have my own band, so the gray band is unused. The band can be replaced, but not all bands fit; the Suunto-style bands didn't fit. It's perfect as a gift for a boyfriend. The band feels good, unlike the cheap ones sold around. I think it's unisex, but it's about 52mm in diameter, so you might feel it's big at first, but you'll get used to it quickly, and it's easy to see. - Model Name: SPORT SMART WATCH - Color: Gray - Band Material: Silicone - Accessories: USB cable, instruction manual, box - Battery: 1000mAh - Body size (diameter): Approximately 52mm. - Frame: Alloy There are no scratches on the front or back (as far as I can see). An AC adapter is not included, but 5V1A is recommended. The photos 6 and 7 are optional and can be provided for an additional 400 yen. In that case, please comment before ordering. Thank you. They are a mix of fluorescent colors and black. Photo 6 is the front. It's a 24mm wide band, and although many pins didn't fit, this one works. I can't lower the price any further, so if you're looking for a cheap smartwatch, you might want to look elsewhere. I'm not comfortable with people who are overly concerned with minor details that don't affect usability or who expect a new-like condition at a used price. I'm sorry, but please purchase a new one elsewhere. Thank you for looking.