Sky Labs Co., Ltd.

Sky Labs is a South Korean healthcare company founded in September 2015 by Jack Lee, headquartered in Seongnam-si, South Korea. The company's core mission is to develop and operate ring-type medical devices and platforms for monitoring chronic disease patients, aiming to enhance their quality of life through big data-based devices, services, and platforms.

Sky Labs specializes in wearable technology, particularly smart rings, for continuous health monitoring. Its key products include CART (Cardio Tracker) for atrial fibrillation detection and management, and CART BP pro (a medical device) and CART BP (a consumer-grade device) for 24-hour blood pressure monitoring. These devices offer features such as ECG and PPG monitoring, providing real-time analysis through a connected mobile application. The company serves both outpatient and consumer markets, and has expanded its offerings to include inpatient ward monitoring with its CART ON solution.

In February 2026, Sky Labs launched 'CART ON', which is described as the world's first ring-type wearable blood pressure monitoring solution designed for hospital wards, aiming to improve the efficiency of managing hypertensive patients. The company's CART BP Pro device was recognized in the Korean Society of Hypertension's 2026 treatment guidelines and is being utilized in a government-led aging cohort study in Korea. Sky Labs is a privately held company led by CEO Jack Byunghwan Lee, and has secured significant funding, including a Series C round in October 2023.