The Embrace wearable by Empatica uses a variety of sensors to perform nervous system monitoring, sleep monitoring, and activity tracking. Its seizure monitoring feature makes it great for people with epilepsy. https://www.empatica.com/product-embrace
Body Guardian Heart by Preventice Solutions
The Body Guardian Heart is a peel-and-apply, wireless, discreet, body sensor that conducts body rhythm monitoring (ambulatoy ECG), average heart rate, average respiratory rate, average activity level. This data is continuously monitored and wirelessly transmitted to a cloud platform for further analysis. http://www.preventicesolutions.com/technologies/body-guardian-heart.html