I use this little baby, https://www.magellangps.com/Store/Switch-Series/SwitchUp-GPS-Watch
Is that just a watch? I keep seeing "ANT." That looks like what it uses to communicate with something else. No chest band with this one? Or does it pull heart rate data off your wrist?Hm. ANT is wireless...https://www.thisisant.com/consumer/ant-101/what-is-ant/