Smartphone owners have battled battery drain with bulky cases and portable USB chargers. But what if your device’s internal battery didn’t need to be juiced up for more than a week?

Oukitel’s upcoming K10000 smartphone has, as its name suggests, a massive 10,000mAh battery that, with “normal” use, could last 10 to 15 days between charges.

The trade-off is that the rest of the phone’s specs aren’t nearly as impressive. The 5.5-inch smartphone sports a 720-by-1,280 HD screen and runs Android 5.1 Lollipop on a quad-core 1GHz MediaTek processor. It also comes with an 8-megapixel rear camera, 2-megapixel front shooter, 2GB of RAM, 16GB of expandable storage, and gesture support. It sports a steel frame and hexa-faceted edges.

The extra power means you can power up a friend’s phone; Oukitel claims it will still have a 10 percent charge after fully refueling three iPhone 6s Plus smartphones.

As Geek.com pointed out, though, this unlocked phone might not be compatable with all U.S. networks. A $240 pre-sale price tag and enormous built-in battery, however, may be enough enticement. The company is taking pre-orders on GearBest, where you have until Jan. 2 to book your new phone.