Garmin Swim is the swimming watch designed for pool use that tracks your distance, pace, stroke count & more. Garmin Swim is ready to go right out of the box. Just tell it the size of the pool you're swimming in (designed for pools 17m & more) & begin your workout. Its sleek profile allows it to cut right through the water, so it won't slow you down. & you can easily replace the battery yourself whenever needed (about once a year), instead of sending it in to the manufacturer, so you're always ready to go. It automatically knows the stroke you're using & tracks your lengths, strokes, distance, pace & more. With a few button presses, you can also log drills or start timed intervals without constantly monitoring the pool clock. It even calculates your swolf score to help you gauge your swimming efficiency, making it ideal for lap swimmers of all levels. The intuitive interface utilizes 6 exterior buttons, so each & every function can be accessed quickly & easily. After your workout, upload your swim data to Garmin Connect for free online analysis. Here, you can view your detailed metrics & track your progress over time. You can also share your workout data with your coaches, workout buddies, or friends & family. Through the magic of ANT+ wireless technology & the USB (Universal Serial Bus) stick that comes with your Garmin Swim, your workout data automatically transfers to your computer when in range. Garmin Connect is Mac & Windows compatible. What's In the Box:* Garmin Swim*USB ANT Stick* Manuals