I finished a sub-4 marathon, so I'm replacing my watch as a reward. It's still usable, but the battery is getting a bit worn down, so you'll want to charge it about once a week for peace of mind. I'd love to pass this on to someone who wants to start running but doesn't want to spend a lot on a watch yet. Please understand that this is a used item before purchasing. - Built-in GPS automatically records distance, pace, and time. - Measures heart rate at the wrist (no chest strap needed). - Supports running, walking, cycling, swimming, etc. - Lightweight design, comfortable to wear for long periods. - Tracks sleep, steps, calories burned, and other health metrics. - Provides recommended training suggestions. - Waterproof, suitable for rain, sweat, and swimming. Original price: ¥31,310 Included: Box, Type-C charging adapter