Ozlo is selling the Sleepbuds 2, the second generation of earbuds built for sleep only. On the brand’s own site they cost $279, and the sleep mask with the travel case come as a gift with the purchase — a limited-time offer rather than permanent box contents. Separately the mask and the case cost $29 each, which is why the company values the whole bundle at $337.
What interests me here is not the price but the omissions. These earbuds have no active noise cancelling and no microphone, which means that neither calls nor a voice assistant are available. Ozlo says it plainly: passive isolation through silicone tips works together with sound masking, and by the company’s own testing that pairing handles a bedroom better than ANC does. That is the brand’s claim, and I will have to check it by ear.
- Weight is 1.6 g per earbud and the body height is 11 mm, according to the Ozlo specification.
- Playback runs up to 14 hours; the brand notes that it measured at 50% volume.
- Noise masking replaces ANC: more than 60 sounds and soundscapes.
- The earbuds switch from streaming to masking on their own once the person falls asleep.
- The alarm plays in the ear and works even with Bluetooth switched off.
- Bluetooth 5.3 with A2DP and LE Audio, IPX4 protection, Android 12 or iOS 17 required.
No microphone. There is one microphone in this system and it is installed in the case, where Ozlo uses it to measure the noise level in the bedroom. The earbuds themselves have no microphone at all, so calls are impossible. For earbuds at $279 that looks strange, but the model is meant for bed rather than for the street. The same case holds temperature, light and noise sensors, while the accelerometer in the earbuds determines the moment of falling asleep.
The case outweighs an earbud sixty times over. An earbud weighs 1.6 g and the case weighs 96 g with dimensions of 78 × 78 × 27 mm. The case battery covers another two or three charges, but the case does not support wireless charging: Ozlo answers that question in its FAQ with a single word, no. It works constantly rather than only while charging, because it measures the noise level and serves as a transmitter, which means that it stands next to the bed at night.
The brand states range in two different ways. The specification on the page says that the case should be kept within 10 feet of distance, and the phone should be kept within 30 feet of distance. The FAQ on the same page gives different numbers: the earbuds work at a distance of up to 10 feet from the case, and the case works at a distance of up to 10 feet from the source device. I see a contradiction inside one document, and I treat the specification as the senior source: 10 feet of distance to the case and 30 feet of distance to the phone. I keep the FAQ wording in mind as a caveat — by it the range margin would be smaller.
Where to buy. Ozlo sells them itself, through its own store. The price of $279 is listed there, and the launch bundle with the sleep mask is described as well. The brand promises returns within 30 days and one year of warranty, while for the European Union and the United Kingdom the warranty amounts to two years.
Ozlo Sleepbuds 2
- Weight: 1.6 g
- Height: 11 mm
- Runtime: up to 14 hours
- Price: $279
Apple AirPods Pro 3
- Weight: 5.2 g — Apple states 5.55 g
- Height: 20.0 mm — Apple states 30.9 mm
- Runtime: up to 5-6 hours — Apple states up to 8 hours with noise cancelling
- Purpose: universal
Ozlo assembled that table on its own page, and it understated the neighbouring column. About itself the brand wrote correctly: 1.6 g of weight and up to 14 hours of runtime. About the AirPods Pro 3 Apple on its official page states 5.55 g of weight, 30.9 mm of height and up to 8 hours of runtime with noise cancelling — not 5.2 g of weight, not 20.0 mm of height and not 5-6 hours of runtime. The weight gap is threefold anyway, it needs no padding. Our page on the Apple AirPods Pro 3 covers something else: those are universal earbuds that do not suit sleep because of their size.
The stated 14 hours of runtime and 1.6 g of weight look impressive in the specifications, but for sleep the deciding factor is not weight — it is whether the tip stays in the ear all night on your side and whether the masking itself gets in the way. Our test will show what place the Sleepbuds 2 deserve among earbuds for sleep.
Have you ever slept in earbuds through the whole night, or does the tip push out of the ear by morning? Write in the comments.
