Question: I'm looking for a wearable device that can detect atrial fibrillation with high accuracy and sensitivity.

If you're looking for a wearable that can accurately and sensitively detect atrial fibrillation, Philips Mobile Cardiac Telemetry (MCOT) is a good choice. MCOT's near real-time arrhythmia analysis, powered by the SmartDetectAI algorithm, has 100% sensitivity and 100% positive predictivity for detecting atrial fibrillation. With a range of wear options, including patches and lead wires, and telehealth support, it's designed to provide continuous monitoring and timely diagnosis.

Another contender is Empatica, which makes a range of AI-powered wearables and software for monitoring health. Its FDA-cleared Health Monitoring Platform is flexible and scalable, gathering and monitoring digital biomarkers in many therapeutic areas. It's designed to be both comfortable and medical-grade, so it can be used for real-world health monitoring and research.

You could also look at Kardia 12L, a handheld AI-powered ECG system for trained health care professionals. It uses a single-cable design and AI trained on more than a million ECGs to help ensure leads are properly placed and to minimize errors. The device can make 35 determinations, including atrial fibrillation, and can capture and review ECGs with a 3-step process.

If you want a more general-purpose health monitoring system, Zepp Health makes smart wearables that track heart rate, blood oxygen, sleep quality and other health data. Its platform uses AI and advanced sensors to offer insights and personalized wellness advice, and it can be used to monitor chronic conditions and pursue fitness goals proactively.