Remember the ReSound LiNX 2? It is a smart hearing aid that pairs with your smartphone to help you hear better. With Spatial Sense, you can figure out where sounds are coming from. Binaural Directionality II makes sure you can understand every word of any conversation in noisy environments. The device was already iPhone friendly but now has an Apple Watch app.
The ReSound Smart app for Apple Watch lets you set preferred volume levels, adjust treble and bass settings, change audio profiles as you move around, and find out details about your hearing aids. You can find out more about it on Resound.com.