There are 5 (NEW & UNUSED) Scosche Rhythm+2.0 Waterproof Armband Heart Rate Monitor available. Each box has a number on the corner of each of the boxes.- Box 16 seal has been opened but the armband is still new and unused. The box for number 16 is in good condition. However boxes 11, 12, 14, 15 have some damage to their box. Scosche Rhythm+2.0 heart rate monitor is the perfect tool for tracking your fitness progress during running and jogging activities. The waterproof armband is designed for unisex adults and can be worn comfortably on the wrist. With Bluetooth and ANT+ connectivity, you can easily sync your heart rate data to your favorite fitness app.If you are having problems connecting to your armband. I was able to connect to mine through the Rhythm Sync app.I wanted to make sure that everything would be fine. So I opened one up and I went to the website below for directions on how to connect to the armband. The link is provided in case you struggle./media/wysiwyg/PDFs/RTHM_web_ENGLISH.pdf