Fitbit officially unveiled the new Fitbit Alta HR on Monday, a new wearable that it claims is the “world’s thinnest” wrist-based wearable with the constant ability to track a user’s heart rate.

The Fitbit Alta is simple in its design, offering a sporty bracelet look with a small touch display that’s easily readable in all lighting conditions. It also sports auto sleep tracking, the ability to show different sleep stages, auto exercise recognition, steps/calorie and distance counters, interchangeable bands, reminders to move when you get sedentary and up to five days of battery life.

The Fitbit Alta HR launches next month

The Fitbit Alta is available in a bevy of colors and can be purchased with more stylish accessory bands. Pre-orders are available now with pricing set at $149 for the standard edition or $179 for special edition models with unique colorways. It’ll go on sale next month.