The device, itself, sports a full-color AMOLED display with haptic feedback, an optical sensor, a skin temperature sensor, and an accelerometer. So it can keep an eye on a bunch of different vitals in conjunction with the Halo service, then provide details about them that should be easy to read. The Halo View also claims a battery life of up to a full week and can reach a full charge in less than 90 minutes. It also is lightweight, swim-proof for up to 160 feet (five atmospheres), and comes in one of three band colors (Active Black, Sage Green, and Lavender Dream). Other band options can be purchased separately, with sport bands starting at $14.99 each, and fabric, metal, and leather bands starting at $29.99 each. If you cancel the Halo membership, you’ll still be able to use basic sleep time, heart rate, and step tracking, but the other tracking features will be closed off.