How many smartphones can boast that? HMD/Nokia For a long time, dumb phones were positioned as an alternative to smartphones and their app abundance. But Nokia is making it very clear that its new 300 Charge can actually be your other phone's best friend, as the device also doubles as a portable powerbank. At first glance, the 300 Charge looks like any old-fashioned Nokia dumb phone, but pretty quickly you'll notice that there's a bit more chunk on show here.

That's because the phone houses a 3,700mAh battery that promises to deliver up to 37 hours of talk time and 40 hours of standby. The really interesting part, though, is "powerbank mode," which activates 10W reverse-wired charging via the included 4-in-1 cable. Adapters for Micro USB, USB-C and USB-A are included.

The 300 Charge probably doesn't have the juice to be your main powerbank if you travel with a lot of gear, but it should be useful in a pinch. Adding to its good-gadget-to-have-around vibe is the high-powered built-in LED flashlight, which Nokia says is up to 4x brighter than the one in the Nokia 105. Another reason to find room for it in your bag.

Nokia describes the 300 Charge as both "rugged" and "sleek," and only the second of those terms is contentious, thanks to the textured back and sides. Otherwise, it's a very basic phone with a Unisoc SC6531E chipset, 4GB RAM, and 4GB storage. The QVGA camera won't impress, and the 2.4-inch display is small, but there's a 3.5mm jack—more than you can say for many pricier phones.

No word on a US release yet, but expect a sub-$50 price tag if it arrives.