Bluetooth Trackball Mouse, Jelly Comb 2.4G USB Wireless & Bluetooth Ergonomic Trackball Mice Rechargeable with USB-C Port and 3 DPI for Mac Computer Laptop Tablet Android Windows

I have had many Logitech 570 trackballs over the years. (closest competitor to this product). I prefer a trackball over a mouse. I buy them on sale when I see then at around $25. Problem is, they don't last very long. Even before the buttons go, the pointer starts doing funny things. Not moving, then jumping around the screen. The buttons are noisy when clicked. I also do not care for the software which I don't think is Mac osx friendly. I also don't care to take up another USB port with your silly dongle.So the brings me to this trackball, everything the 570 is not. It's bluetooth, so no dongle. (even though you can set it up that way, I don't know why you would) It's quiet and very smooth. As comfortable and ergonomic as the 570. Very easy to setup and plays extremely well with Mac Osx. It just feels like a quality product, especially compared to the logitech. It costs more, especially compared to the sale prices on 570, but "you gets what you pays for." I plan on sending one to my son as he is also having issues with his 570. If it lasts, and I am confident it will, this will be my trackball of choice.

TL;DR Summary...Pros- Quick setup, either via Bluetooth or USB receiver.- Marble movement is super smooth.- Both right and left buttons are near silent.- Buttons have good travel/feedback.- Thumb placement for my hand is just right.- DPI button actually makes a difference.- Instruction manual is easy to read.- [Update] Can connect to more than one device via Bluetooth.- USB-C charging connector.- Textured surface.- [Update] Battery life/charging.- [Update] CleaningCons- Unable to connect mouse via wired (USB) connection.- No "middle" DPI setting.- Middle, back and forward button clicks are a bit louder.Unknowns- Durability- Kind of a strange brand name.I have been a user of thumb-operated trackballs since the days of the Logitech Trackman Marble. For those not old enough to remember, that was the original three button (non scroll wheel) white mouse, that used a plastic ring to hold the marble in place. Over the years, my beloved track balls have evolved. From adding a scroll wheel, to removing the third button, to changing the socket... I could forgive it all, until Logitech retired the (wired) Trackman, in favor of the (wireless) M570.I have been on a quest ever since to find a wired replacement, and while this is unfortunately not it, my initial impressions of this mouse are MUCH better than that of the M570.First, the box that this mouse comes in couldn't be anymore different than the 570. While I had to remove or cut at least two or three sticky tabs to get to the Logitech out of its packaging, the Jelly Comb required just one tab and it was free. In the small box was a bubble wrapped mouse, a 3ft USB-C charging cable, a manual and warranty registration card.The manual was clear, as it labels and identifies the different parts of the mouse, and then goes into connecting, through various methods. The easiest is USB, as you simply turn on the mouse, press the mode button to switch the light to "1" and then connect the USB receiver to your device. In that respect, it's as easy as the M570. Unlike the 570 however, this mouse also connects through Bluetooth, which, given my already crowded 2.4GHz spectrum, is a welcome change, especially since my 570's would intermittently lose connection for a few seconds.While others indicated having trouble connecting through Bluetooth, I found the instructions were well laid out: turn on the mouse, press the mode button to select either "2" or "3," and long press the mode button again, until the light blinks fast, then it's just a matter of going into the respective Bluetooth settings, scanning for new devices, and then pairing it up.As best as I can tell, response time between my input and the result on the screen is near instant, and I notice very little lag when operating in different areas, such as general use or gaming (I tend to play a lot of ARPGs, such as Diablo 3 and Path of Exile, so this mouse will definitely be put through its paces). Additionally, there seems to be little to no lag, if and when the mouse goes on stand-by, as a simple flick of the marble or click of a button will reactivate it.Connecting to a second Bluetooth device was simply a matter of pressing the mode button, to go into "3", then long pressing until fast blink, scanning on the 2nd device and pairing. While switching between the two devices took about 1-1.5 seconds to reconnect, it beats the heck out of having to transfer the USB receiver from one device to another, so in terms of connectivity, this mouse beats the 570, hands down.***UPDATE [Connectivity]: I currently have this mouse connected to three devices: my main rig (Bluetooth), my work laptop (Bluetooth), and an older backup laptop via the USB fob. In all cases, all I have to do is press the mode button to change the number on the mouse and I'm connected to the device. I cannot stress how much better this is over my 570, given I not only need a USB connector (vs. Bluetooth), but without additional connectors, only supports one device at a time.While I can't yet speak for battery life, I've been using it for about half a day on the charge that came out of the box, and connection is still strong and responsive. While USB-C is nice, given I don't have to worry about orientation, I'm using a magnetic USB charger, and thankfully the socket has enough clearance for the type of bit I'm using, which allows me to connect the charger, without having to pick it up or move it. This also means that I don't have to keep switching batteries, which I consider a win.***UPDATE [Battery Life]: I received the trackball on 14 October and it just now died on me, on 7 November, 24 days later, using only the charge that came out of the box. Used it 5-10 hours a day (mostly work). Charge to full took about an hour, using a dedicated power brick (5V 2A).The back and forward buttons work as expected, out of the box, as does the wheel/middle mouse button, although the clicks on these buttons is noticeably louder than the right and left buttons, which have a very nice muted click, without sacrificing travel or feedback. Still, the clicks on these other buttons are many times quieter than the M570, which can be heard in the next room.Finally, the star of the show, the reason most folks are looking to purchase a mouse like this in the first place... the track ball/marble. My first impulse when taking this mouse out of the box was to gauge the weight, which is actually a bit heavier than the M570 (a good thing), my second impulse was to move the track ball, and I have to say, I was extremely surprised at just how effortlessly it moved, without having to resort to the "t-zone" rubdown!Again, I've only been using it for half a day, so only time will tell how it handles buildup, but already it's better than the 570, not only in how it glides, but also in the fact that the bottom hole, below the marble, is big enough for me to pop the ball out with my index finger, which will hopefully make routine cleaning a lot faster than it did on the Logitech.***UPDATE [Cleaning]: it is currently 19 February and I've only had to clean the trackball twice. As previously mentioned, cleaning is as easy popping the ball out with my index finger, removing the build up (which surprisingly, is less than my M570, during a similar period of time), and popping the ball back in. What impressed me is that out of those times, I only had to resort to the "t-zone" trick once, as movement remained smooth otherwise.Overall, I have to agree with the other reviewers that give this mouse the edge over the M570. It's still not my beloved wired Trackman, but as long as it proves durable, I may just end up replacing all my 570s, or since I can technically connect up to three different devices with this mouse, I may not need as many!

Mine arrived in a simple cardboard box with no instructions.The first thing I have to tell you is it took about half hour of fruitless research and attempts to even get it to pair with my Macbook Pro, and if you want to skip those headaches I can tell you kind of what I did.I looked for an online manual. No dice. The jellycomb USA site does not include a pdf of the manual for this mouse. It also doesn't TELL you which mouse this is on the box so there, I just saved you a big old headache of looking through all the manuals one by one. (by the way JellyComb, a 24 pages manual seems a little excessive to me for a manual, but hey, what do I know. You do you.)I looked on the forum above. Vague and ultimately helpful, but in the same sense that if someone told me "just try a bunch of stuff and eventually it might work."Thanks a little bit, I guess!Here's what succeeded - 1) setting the device number to "2" using the button with two circling arrows. Why 2? i have no idea. but someone up there said it might help to try each number.2) holding down literally EVERY button at the same time for three seconds. Note that this means the two little thumb buttons, both clickers, the WHEEL itself (which is a button) , BOTH clickers, AND both of the little buttons labeled DPI and circley-arrows. counting slowly to three, holding them ALL down with fingers on both hands. A kind of a hail Mary pass, really. But it seemed to work.After holding down ALL of these buttons for three seconds (I figured the magic password was some combo subset) I succeeded in seeing the little "2" start fast-flashing, and then and only then did it appear on my pairing menu, on the laptop, which I was frantically watching with the corner of one eye while trying to keep all the buttons pressed.I felt like Ali Baba would have felt if he just yelled "open CORNMEAL WHEAT GARBANZO f$%kit let's add in SESAME" all at the same time, and somehow the magic worked.now that its paired it seems to work pretty well. I like having the extra USB port and the DPI button is helpful (it adjusts the responsiveness/movement speed).I hope this mouse works better than the Logitech that I bought this one to replace. So far it seems to.And by the way, four stars for everything so far, honestly seems like a top notch product here, just weird they way that they make you do an initiation ritual to use it.I feel like maybe I've been jumped into a gang by a group of tiny mice, wearing steel-toed boots. My head hurts. So that's why I am deducting one star from an otherwise solidly positive review.

I am impressed with the ease this Jelly Comb mouse is to work with