The most important things to know when shopping for a cell phone.
All-day heart-rate tracking is a step in the right direction, but the smart features aren't nearly smart enough and the fitness side of the Surge is too basic to justify the higher price.
Fitbit's Charge HR adds heart-rate tracking to an already solid fitness band at a great price, but all the kinks don't feel fully ironed out yet.
The Fitbit Charge is a fine replacement for the discontinued Fitbit Force, but you're better off waiting for Fitbit's heart-rate-tracking upgrade.
And why you may prefer to stick with one color or the other.
We have seen the future and it includes an iris-scanning smartphone and luggage that can weigh itself. Check out the rest of the impressive tech from day two of Mobile World Congress 2015.
The Charge tracks steps and sleep, and does it well, but you really should wait for the heart-rate-tracking version next year. Here's why.
The Acer Liquid Z220's textured design helps it stand out from the crowd -- but it's a shame about that bezel.
But how did the Mistress/Master survive being zapped by a Cyberman? And what's with the apple?
At over $35,000, Volkswagen's e-Golf is one of the nicer, but not one of the cheaper, electric vehicles on the road. Now, a Limited Edition drops that price by $2,000.