Ozlo launches Sleepbuds 2 with longer battery, better Bluetooth

Ozlo, the sleep-earbuds startup founded by former Bose engineers, unveiled Sleepbuds 2 on Tuesday, an updated version of its original device that targets battery life, connectivity, and sound quality. The new model costs $279, a $30 increase from the original Sleepbuds, which were $249 last month against an MSRP of $349. The launch is Ozlo’s first major update since its original device shipped and marks the company’s shift from a continuation of Bose’s earbuds business into its own sleep platform.

The original Sleepbuds, launched in late 2024, were built to fill the gap left by Bose’s exit from the sleep-earbud category the year before. Ozlo’s co-founders — N.B. Patil, Brian Mulcahey, and Charlie Taylor, all Bose veterans who had worked on the original Sleepbuds program — acquired and licensed the Sleepbuds research and IP to start the company, making its first product essentially a continuation of Bose’s earlier work. That device, smaller and more low-profile than AirPods and popular with side sleepers, now has more than 200,000 customers and offered built-in sleep sounds, Bluetooth streaming, passive noise blocking, an in-ear alarm, and sleep tracking.

Sleepbuds 2 bring 14 hours of battery life, up from roughly 10 hours, and a charging case that can now store two to three nights of power, plus a button for playing a sleep sound or snoozing the alarm without reaching for a phone. Ozlo also targeted Bluetooth connectivity, which could be flaky even as software updates improved it over time; the company says a redesigned antenna and extender now give the buds longer range, a more reliable connection, and dedicated pairing controls. Audio gets a built-in amplifier for better sound masking, plus personalized tuning across modes including Spoken Word, Airplane, Focus, and Balanced. A new Sleep Shield feature blocks incoming calls, alerts, and notifications — if the phone’s own sleep-focus mode isn’t already handling that.

Ozlo has also expanded its sleep-insight tracking: the buds monitor breathing and movement, while the case tracks room sound, light, and temperature, to help users learn which conditions produce more restorative sleep. The company told TechCrunch during an interview at the Consumer Electronics Show in January that it plans to build a broader sleep-data platform, including using AI to interpret sleep patterns and developing an AI “sleep buddy” for users to discuss their data with. The $279 Sleepbuds 2 ship with the charging case, a USB-C cable, and four pairs of silicone ear tips; Ozlo is including a sleep mask and travel case with purchases for a limited time.

Why it matters

Ozlo’s shift from a single earbud line to a sleep-data platform, with AI features still in development, signals sleep tech becoming its own wearables category — one Bose vacated and that independent players are now racing to own.