Many people frequently experience brain fog, lightheadedness, or fatigue without an obvious cause, even when standard vital signs remain within normal ranges. Traditional wearable devices miss a critical piece of the puzzle by failing to measure blood flow to the head.
To address this gap, Lumia combines nearly six years of clinical research conducted alongside Johns Hopkins, Duke, and Harvard, with engineering innovation from former Bose experts, to create the world’s smallest smart wearable. This device continuously tracks real-time blood flow to the head, offering users immediate insights into how circulation impacts energy levels, focus, and mental clarity.
The company just secured $7 million from J2 Ventures, BonAngels Venture Partners, and angel investors, as well as $5.1 million in government contracts and grants, bringing the total investment to $17.2 million and enabling expanded access and further product development.
Combining aesthetics with science
Daniel Lee, CEO and co-founder, drew inspiration from personal experience watching his father suffer from chronic fainting linked to blood flow problems. Paul Jin, co-founder and COO, contributed his medical ultrasound expertise to refine the technology.
Together, their mission centres on delivering meaningful, accessible medical insights through a consumer-friendly product, transforming care for patients with chronic blood flow disorders, and helping all users optimise their daily wellness.
Lumia 2’s technology integrates the patent-pending SwitchBack™ modular earring back system, allowing users to wear the device with a variety of earring styles, including huggie hoops, cuffs, and studs, offered in gold, silver, and a unique cuff that fits non-pierced ears. Weighing under 1 gram and five times smaller than AirPods, it stands as the world’s smallest wearable device.
At its core is the second-generation PreciseLight™ sensor, positioned near the ear to capture superior arterial blood flow signals that wrist- and finger-worn devices cannot detect. Beyond blood flow, Lumia 2 continuously tracks sleep quality, temperature, menstrual cycles, and readiness levels with remarkable accuracy due to the ear’s optimal sensing position.
The earrings feature a locking mechanism to avoid accidental loss and come with a swappable battery pack that lasts between 5 to 8 days, supporting uninterrupted 24/7 wear, including during sleep, showers, dressing, and exercise. The Core sensor fits on the left ear, with performance-focused pairs made of hypoallergenic materials such as platinum and titanium sold separately.
