Weve seen fitness tracker announcements from Sony, Intel, Garmin, and one rather surprising candidate: Razer. Best known for its stylish peripherals and gaming laptops, the company is jumping into the fray with a smartwatch and tracking band mash-up called the Razer Nabu. Its a stylish band that melds smartphone notifications with a suite of fitness-tracking features, but unlike its competitors — who focus primarily on all-in-one turnkey solutions — Razer is hoping third-party developers will take the reins and turn the Nabu into a full-fledged platform. Weve been working on the Nabu band for about three and half years, says Razer CEO Min-Liang Tan.