Thank you for taking the time to post on this Community thread. We know a few of you have had questions surrounding Phone Free Mode and the amount of radiation the Sleepbuds emit, so we have compiled all of the information together, to hopefully answer your questions.
How does ‘Phone Free Mode’ work?
When placing the Sleepbuds™ into ‘Phone Free Mode’ the Buds will advertise (been seen) over BLE for a period of 10 minutes, starting when they are placed into phone-free mode, or whenever they are initially removed from the case. In Phone-Free Mode, your pre-selected sleep sound will play as soon as the buds are removed from the charging case, no app required, but wake up alarms are disabled while in this mode. After a period of 10 minutes, the Buds can no longer be found over Bluetooth and will need to be put back into the case in order to establish a Bluetooth connection.
Do I need to worry about Radiation when not in ‘Phone Free Mode’?
Bose noise-masking Sleepbuds™ achieve ultra-low radiation exposure because we do not stream audio or other content throughout the night. Instead, the product plays back audio files that are stored locally. In addition, Sleepbuds™ use a class-Ill Bluetooth® radio, which has the lowest transmit power among all the Bluetooth ® classes. Over the entire night, Sleepbuds™ emit a fraction of what traditional Bluetooth® headsets emit during a single phone call.
Can the sound levels damage my hearing through continued use?
Bose noise-masking Sleepbuds™ will have a maximum sound pressure level (SPL) output of 70dBA, which is well under the OSHA and EU limits for hearing damage. Note that sound pressure is measured on a logarithmic scale. 80dBA is twice the perceived loudness of 70dBA and 10 times the sound intensity (power); 90 dBA is four times the perceived loudness of 70dBA and 100 times the sound intensity (power).
In the U.S., OSHA sets the maximum exposure limit for an 8-hour work period at 90dBA, but also mentions that the employer must implement a hearing conservation program if levels exceed 85dBA. https://bit.ly/2Zyp6ZV.
In the European Union (EU), the Noise-at-Work Regulations (Directive 2003/10/EC) sets the maximum 8-hour exposure limit at 80dBA before some type of hearing protection must be provided. Below this limit, the risk to hearing is assumed to be negligible. https://bit.ly/2WQmdlH.
If you have any further questions please let us know and one of our moderators would be more than happy to assist.