NextSense has launched a product that blurs the line between sleep science and consumer technology: Smartbuds. These truly wireless earbuds are fitted with six electroencephalography (EEG) sensors—devices more commonly found in clinics—that monitor brain activity in real time. When the sensors detect light or deep sleep, the earbuds deliver precisely timed sound frequencies to encourage slow‑wave sleep, the phase associated with recovery, memory consolidation and next‑day alertness.

CEO Jonathan Berent frames Smartbuds as a shift from passive sleep tracking to active intervention, noting that most wearables treat sleep as a score rather than a state to support. The earbuds learn individual neural patterns, adjusting stimulation each night to suit the wearer. Early beta testing over 106 nights showed increased slow‑wave activity and nearly half of participants reporting markedly better sleep and morning recovery.

The hardware and business model are equally novel. Smartbuds resembles premium noise‑canceling earbuds, while the engineering prioritizes accurate brain‑wave measurement and comfort. retail for $400, but a limited‑time early‑bird price of $249 includes a Fit Kit subscription that sends fresh ear tips and wings to maintain clinical‑grade signal quality. After a three‑month trial, the subscription costs $14.99 per month. The earbuds require an iPhone 12 or newer running iOS 17 and are available now.

For tech‑savvy men balancing fitness, productivity and well‑being, Smartbuds offer a discreet way to improve rest without wearing bulky headbands.