Razer Fitness Tracker - Retail Packaging - Green

This was purchased on July 2nd and received July 3rd (gotta love Prime shipping)I ignored the reviews saying that it had issues with the connection and that it stopped working after a while, mostly because I love Razer. But this was a big disappointment. Connected and worked fine for about 5 weeks, but then it started having issues with the connection. Now it is completely not working unless it is plugged into the charger. Tried to register it for the warranty on Razer's website and it asks for a product number that you cannot get unless you didn't throw away the packaging (which I did.) so I am SOL.Next time I'll just get a FitBit or maybe a cheap pedometer. Either one will work better than this in the long run.

The product is very easy to use and it is really cool. Easy no fuss interface, charging only takes me an hour, if anything an hour and a half. Always stays connected to my phone, I have never had any issues with it staying connected. Keep in mind the "Nabu X Utility" app must remain open in the background at all times. And the Bluetooth does not drain my battery at all. I am using a IPhone 6 Plus running I.O.S 8.3 with Bluetooth 4.0

I did some research on fitness bands prior to this purchase...that being said I didn't do enough research. This band refused to charge and when it did after some serious manipulation of the connection cable it would charge and within seconds of saying 100% I would disconnect and it would drop to 20% ish. The blue tooth snyc never worked, as I couldn't trust the reliability of the information because of the constant disconnect from the application on my smart phone. Simply put, don't go cheap, this is simply a product I cannot recommend to anyone and would stress to not waste your money. I'm in the process of returning it for a full refund. This is just my opinion so be gentle.

For the price, this NabuX is a great little fitness tracker. It's simple for those of us who don't want to track high endurance workouts. It monitors my steps, my minutes of activity, my calories that I burn, and my miles. I rated it a 4star because of how well it works for these 4 things. I would have rated it a 5, but the sleep mode has problems. It will tell you the number of hours you sleep, but twice now, it's quit tracking how I sleep. Resyncing the bracelet to the app is nowhere as easy as it says. That's why I didn't give it 5 stars. I actually had to download a sleep app from google play store. Still, if you just want to get more activity daily or trying to lose a few pounds, this will help motivate you. I've never used the social app part, so I don't know if that works. It also works great to let you know any notifications from your phone or tablet. It is definitely one of my favorite fun gadgets.

I used to wear these many years ago before smartwatches were really a thing and I couldn't afford the nicer Nabu. After finding my old one and no cable to charge it, I bought this to get it up and running again and the unit I received immediately dies as soon as it's off power from the USB. The newest version of the app in 2021 will connect to the device but is unable to sync in software despite connecting over bluetooth, old and new, and on different phones.This is only useful as a stylish writstband, any actual functions of a watch are no longer functioning. The Xiaomi and Honor bands are great and affordable if you're looking for a modern smartband.

Bought this for a hard or hearing parent. Programmed it to vibrate with phone calls and texts on iPhone using the app. Works well for the most part. Battery life is about 1 week. Have been using for a couple of months with only minor issues.

So just to be clear the product is really cool, but it has stopped working about 2 months after I got it. I am in talks with the razer customer service, but they want Amazon to deal with the problem because I bought it through them.*****After the customer service*************I want to update this after talking with customer service I got a new band, just had to pay for shipping once I got the RMA number. The problem with this are two fold 1) There is a proprietary charging cable that connects to a USB port. I hate proprietary cables, but the first one I got was poorly made, the housing on the male USB was not secured. I had to remove the plastic then pull the cable out of the USB port. It wasn't a deal breaker but under there is never one cockroach theory...not a good sign. With the cable they recommend that you charge the device while you are working at your computer because of the second fault 2) it is super easy to damage it through overcharging. Once the battery gets damaged everything: data, notifications, charge life all fall into the toilet and in my case it was a race to see what would happen first - would I get past all the customer service barriers or would the smartband stop working completely.As far as the cascade of failures, the sleep track stopped working, then I noticed that a charge would last 4 days then 3 days, then it wouldn't really send me notifications for calls and texts, then the steps were all messed up. It simply became easier not to use it because all the data was questionable (which was a secondary purpose for me) and the primary of not being able to get haptic feedback on my wrist was absent.Overall I still like the idea of wearables, but I think I will pay a bit more to find something more robust. Also in full disclosure the second time the band failed I decided it was not worth the hassle to go through customer service.