Amazon announced its new fitness tracker, the Halo View, at its big hardware event earlier this year but it’s now available to pre-order. Better yet, since we’re in the middle of Black Friday week, Amazon has already discounted the device from its regular price of $79.99 to a sale price of $49.99. The Halo View comes in two band sizes, a small/medium, recommended for wrists that are between 5.12-7.68″ around, and a medium/large for wrists that are 6.3-8.86″ around, but the device is the same size regardless. It can track your steps, heart rate, and blood oxygen levels, in addition to providing activity and sleep scores. The battery is said to last up to 7 days and it comes in 3 colors.