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A day ahead of the Mobile World Conference in Barcelona, Spain, tech giant Samsung pulled back the virtual curtain on the smartwatches. Yes, smartwatches. Plural. They are called the Gear 2 and the Gear 2 Neo.

Perhaps the biggest difference between the first and second generations of Samsung’s smartwatch is that the Gear 2 and Gear 2 Neo will run Tizen, an open source, Linux-based operating system. Their predesessor runs Google’s Android OS.

Tizen is a collaborative project between Samsung and Intel that is designed to give users a uniform experience across devices, the companies say. As noted last week, Samsung plans to present an updated HTML5 version of Tizen at the Mobile World Conference.

There are a few visually noticeable differences in the new iteration of Gear. First, Gear 2 and Gear 2 Neo have a more lightweight design. In Gear 2, the camera has been relocated from the wristband — where it’s situated on the first Gear — to the watch’s main body. Gear 2 Neo doesn’t have a camera.

The new smartwatches will feature a standalone music player, so users can listen to music on the watches without being connected to a smartphone. They will also come with aheart rate sensor and a pedometer.

Gear 2 will be available in Charcoal Black, Gold Brown and Wild Orange. Gear 2 Neo will come in Charcoal Black, Mocha Grey and Wild Orange.

Otherwise, the Gear 2 and Gear 2 Neo seem much like the first generation Gear. The two new Gear watches will be available to customers starting in April, Samsung says.

Related: Why This Will Be a Huge Year for Wearable Tech