The phrase "a device that combines" is correct and usable in written English.
You can use it when describing a gadget or tool that integrates multiple functions or features into one unit.
Example: "The new smartphone is a device that combines a camera, a music player, and a GPS navigator all in one."
Alternatives: "an apparatus that merges" or "a tool that integrates".
What engineers would like is a device that combines the best of both.
A device that combines these features could "offer a huge simplification in instrumentation, making these almost ubiquitous," Rose says.
Researchers at Yale, though, have developed a device that combines mechanical vibration and optical fields to better control light particles.
MIT researchers develop a device that combines a solar cell with a catalyst to split water molecules and generate energy.
Their actual use may turn out to be to provide power for portable electronic devices.A fuel cell is a device that combines hydrogen with oxygen to generate electricity.
The company is now trying to jumpstart its stagnant handheld business with a device that combines video and audio playback with communications and business productivity features.
Here's a quick look at a prototype device that combines an ARM based tablet PC inside a HP Mini-note.
It has also teamed up with Swiss hearing-aid company Phonak Group to develop a hybrid device that combines a Cochlear implant with a traditional hearing aid.
Buying a handheld device that combines both a personal digital assistant and a wireless phone can be a complicated affair.
Sony just announced a new camera called the RX0, but breaking from the trend of lower number = fancier camera, this one is a tiny device that combines an action-cam form factor with some traditional imaging prowess.
The HRI is an imaging device that combines a visible-light camera with a filter wheel, and an imaging infrared spectrometer called the "Spectral Imaging Module" or SIM that operates on a spectral band from 1.05 to 4.8 micrometres.
