Texas InstrumentsInstruments GRAFIKRECHNER TI-NSPIRE CX-II T CAS, Black

The goods arrived earlier than promised, and work very well.Good service and appreciated.

Came quite quick, worked out of the box, no issues at all. The user interface is quite decent as well. The menus are quite easy to navigate once you get used to them.

Use this calculator for my Business Management studies, for which it is overkill. It's easy to use and understand, with a companion application that replicates the calculator.I had the good fortune to buy this calculator during a sale. It is a solid device, feature-rich, and easy to use.

My version of the keypad is red on black, and is of very poor contrast.Equally bad is that the key clicks are like old TI wedgy 1980's-style hard-click keys which are (a) uncomfortable, and, (b) not as easy to use as fast as other quality keypads such as almost any other calculator on the market, including the TI-83, TI-84,TI-89/Voyage 200, any Casio, any Sharp calculators, even if you get past the unintuitive lay-out.It took me very little time to be able to fly through the menus on the TI-83, and find special characters on the Voyage200, but I am finding it hard to quickly find certain items on the nSpire *unless I use them frequently*.The mouse'pad' is awful.The functionality of this machine is exceptional but is let down by the keypad both mechanically, and in soft functionality.Thumbs up for the inclusion of student software which is basically an emulator for your PC, although it also includes pairing software so you can start work on your calculator, and carry on on the PC, and vice versa.Come on TI, fire the senior person who made the decision on the keypad ( not the engineers ), get your act together before you lose your reputation. I'm thinking of Casio or Sharp next time unless TI sort out the basics. The TI-83/84 and TI-89 are preferable machines to this, especially the TI-89 which has great CAS. Few people need the extra speed of the nSpire over the nice-to-useness of the 83/4 or 89. There are a few functions unique to the nSpire, but my bet is anyone who needs that extra functionality would be in a position to add a quick program or function of their own to do it anyway.For students, get yourself a T89 which has CAS. I guarantee you will learn maths quicker and easier than the nSpire. If you can find one and afford it, the Voyage200 is a qwerty version of the 89 with a few tweaks to the menu system, but they are very similar. Even though the screens are older LCD so not as clear, you would never regret having one of these machines, but might regret buying an nSpire.If you definitely are against CAS ( why would you,?), then get an 84 or 83.The older machines are easier to play with maths on imo

I received the device today, not in the original ti calculator style package, and I think it may be missing the sync cable for charging and transferring data to pc. I have tried a generic cable it does charge but my windows 10 pc does not recognize the device in the Ti-Nspire computer link.

Still learning all the functions but very impressed so far. Battery life is difficult to comment upon as it is so new but seems to be holding up fine. And having Li Ion battery helps enormously.

The best calculator ever. More user friendly than the HP prime calculator despite the fact that it doesn't have touch screen. A must have tool if you're enrolled in university level calculus course.

This may be a fantastic calculator from a technical perspective, however, from an aesthetic and useability point of view, it's the worst calculator I've ever seen.For some reason, somebody at Texas Instruments thought it would be a great idea to mould a calculator out of shiny black plastic and then print the legend in a dull maroon ink.This results in very low contrast text making it near impossible to read in anything other than the best light, why on earth they did this I have no idea but the legend on the keys is printed in white ink and can be easily read.The text is shown on the sales photograph is clear but this is taken with high power photographic lighting now a sixty-watt bulb.