It is also easier to consistently place the buds in the case correctly, thanks to a repositioning of the magnets on the buds and a design tweak to how they align within the case. More content will be added through future software updates.Ĭonnecting the buds to the app is more reliable. Noise-masking capabilities are improved through a change in the bud design, which led to better passive blocking of noise, as well as further optimization of masking sounds around a new, better-performing driver.Īn expanded content library includes more options for noise-masking and relaxation with the addition of nature sounds and soothing music. Although less than the 16 hours of the original noise-masking sleepbuds™, this is still enough for a full night’s sleep.įurther, the storage case can recharge the buds three times, providing a total of up to 40 hours of use versus 32 for the original Sleepbuds™. The earbuds have battery life of up to 10 hours. Sleepbuds™ II use nickel-metal hydride (NiMH) battery technology, which has a 30-year history of use in both consumer and medical products. We made considerable improvements in Bose Sleepbuds™ II: Cancellation creates quiet in our ear canals masking - in the right conditions - creates quiet in our minds. Masking works because of the way different sounds combine in our inner ears if they have the right match of frequencies and the masking sound is just enough louder than the disturbing sound, the inner ear and brain cannot detect the disturbing sound. Masking, on the other hand, introduces a soothing, desirable sound to help the brain ignore the disturbance.
However, no combination of passive and active technologies for reducing the sound entering a user’s ear can make unwanted noises completely inaudible. In Bose Acoustic Noise Cancelling™ products, noise cancellation is combined with passive blocking to achieve a good reduction of sound at all frequencies. Noise cancelling technology continuously measures, compares, and reacts to outside noise, then cancels it with the opposite signal.
Although Bose pioneered noise cancelling technology, we found that masking is better for addressing noises that disturb sleep.
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