I rarely to never leave reviews, but wanted to share my experience with others interested in this watch, or finding a good quality, cheap smart watch.... this is NOT it. I really wanted to like this watch and couldn't.I was thrilled to order and receive my watch, since I'm a personal assistant, and crappy sleeper, and would be such a useful tool for me.First issue, the instructions are not clear so had to still findle around to set it up. The app is useless, and not user friendly.I could not get the steps, heart rate, or sleep tracker to register on either the app or the watch, later realizing it doesn't even have the body reading sensor underneath like it needs to read vitals.It doesn't change to a custom background, no alternative display options, or even to switch out of the military time option.Most of these were oversights (besides figuring out the missing sensor the next day) that I was willing to overlook and just deal with it, being my first smartwatch and assumed they will all have something I don't like.But then day two, the screen just stopped turning on, assuming it was dead, which charge did not last long, I plugged it in. It did turn back on on the charger for a bit but as soon as taking it off, screen would not turn on again.Issue after issue. Save yourself time and do not buy. I ended up stepping up my budget a bit for it, knowing you get what you pay for, and got a $50 smartwatch that I love.Also worth mention, you need a sim card to use a lot of features like saving any pics taking on it and using the internet.The pluses I can say: It is pretty cool that it has a camera, and it gives you notifications on almost everything on your phone that you can customize what ones you want to recieve. Also nice that you can access and view your full phonebook and text history, respond to texts, has a calculator, and surf's the net (to what extent, I don't know without the sim).There is lots to fix to make this watch usable. Has great potential and cool features, but currently crappy... buy something else.Just not high quality even for 40$Don't use instructions are not clear as well ae very small hard to read pamplet.It’s nice but we had trouble loading onto our phones at timesIt's a nice watch for the price, but the battery doesn't last long.As verified by the seller - this watch does not have an IMEI, ESN, or MEID # in order to connect and use as a standalone phone. It does have a SIM card slot and I can connect to my Iphone make BT phone calls, but that is not why I purchased this watch. Battery life is not good - must be charged every day. Lesson learned - go with a brand name next time...Weak and awkward camera. Weak batteryThis watch sucks. The battery time is about hr. The tracking is horrible. The app for the watch is out of date it doesn't work with the newer phones or have an update. Also states it could be dangerous to download the app. Just want a refund my worst buy ever.