There are a ton of Android Wear watches available, with a lot of variations. Huawei Watch 2 is one of the most dedicated fitness Android Wear watches of the current bunch. The US version is Wi-Fi only, but you can compare it to our review of the LTE-enabled version.
If you're listening to music and taking calls on Apple Watch, you'll need some wireless earphones. AirPods pair the best and swap easily from calls to music, one-ear or two-ear. They're made to go with the Watch quite nicely.