Samsung has done a great job of smoothing the transition from its long-standing Tizen watches to the Galaxy Watch 4 and this new era of Wear OS. You get all the appealing components of classic Tizen Samsung Watches, including great-quality hardware, intuitive software and an optional rotary controller, with a potentially brighter future for third-party apps. Should you buy one instead of a Galaxy Watch 3? Probably yes, unless the price drops through the floor. Should you be a bit miffed if you bought a Galaxy Watch 3 three months ago and now find yourself living with a (probably) dying smartwatch platform? Definitely.