- Stay cool or warm with the Embr Wave 2, a wristband that gives you instant thermal relief with just a press- It's clinically proven to help ease hot flashes, chills, night sweats and sleep issues- You can connect to the Embr Wave 2 app to explore six categories and save your personal settings- With over nine hours of silent, discreet relief on a single charge, it's ready whenever you are- Results will improve over time, so you'll need to use it for at least two weeks start to feel the effects