i had purchased 3 and found I only really only needed 2. This Watch changes faces. has a phone app to keep track of your results. you set the parameters with your DR. and this moniter will let you know if you are too high or too low. Glucose, body temperature, blood pressure, beats per minute, blood sugar,uric acid, physiotherapy, step counter, weather Time ( analog ). NO PAIN !! GUARANTEED. the charge cable. Manuel black silicone band with quick release (easy on/ off) moniter/watch piece original from Wolf Notch Company only opened. to show. I am not an authorized seller, I am just a past purchaser of theirs reselling an unused health monitor watch.I ordered 3, and I only need 2. sorry, the warranty did not transfer. Note: Please, I do not go off Poshmark, no text, emails, or even off of your Posh accounts or phone calls. I WILL very happily help all I can, On Poshmark, thank you, happy Poshing