Operational Advisories

This headset meets or exceeds all requirements of EN352-4, 1996 (European Standard-Hearing Protectors-Safety Requirements and Testing-Part 4: Level-Dependent Ear Muffs).

•The wearer should ensure that:

i.The ear muffs are fitted, adjusted, and maintained in accordance with the manufacturer’s instructions.

ii.The ear muffs are worn at all times in noisy surroundings.

iii.The ear muffs are regularly inspected for serviceability.

WARNING: If the above recommendations are not adhered to, the protection afforded by the ear muffs will be severely impaired.

•This product may be adversely affected by certain chemical sub- stances. Further information can be sought from the manufacturer.

•Ear muffs, and in particular cushions, may deteriorate with use and should be examined at frequent intervals for cracking and punc- tures, for example.

EN352-4 also calls for HML Criterion Levels and other data to be provided to describe the hearing protection performance of level- dependent devices. At present, no standard has been drafted or accepted defining how to measure the hearing protection provided by active noise cancelling headphones. In the absence of an accepted method, Bose® Corporation has had the product’s attenuation mea- sured by an accredited U.S. testing laboratory using a combination of real head methods. Based on this information, the Bose Aviation Headset Series II provides sufficient hearing protection in any noise up to 108 dB(A) in sound pressure level. For more information on the methods used and the results obtained, please contact the Bose Aviation Headset Service Department (page 23).

This headset complies with RTCA/DO-214 Audio Systems Characteris- tics and Minimum Operational Performance Standards for Aircraft Audio Systems and Equipment:

•Transient RF Susceptibility per RTCA/DO-214 ¶ 2.5.11.1 and RTCA/ DO-160C ¶ 20.0, Category T.

•Sustained RF Susceptibility per RTCA/DO-214 ¶ 2.5.11.2 and RTCA/DO-160C ¶ 20.0, Category T.

II specifications

Bose II, known for its innovative audio technologies, has firmly positioned itself as a leader in the realm of premium audio equipment. This latest line of products brings together enhanced sound quality, sophisticated design, and user-friendly functionality.

One of the standout features of Bose II is its use of Advanced Noise Cancelling technology. This cutting-edge feature allows users to immerse themselves in their music or calls by effectively blocking out ambient noise. By employing sophisticated algorithms and multiple microphones, Bose II headphones adjust the level of noise cancellation according to the environmental sounds, providing a customized listening experience.

In addition to noise cancellation, Bose II products often incorporate the proprietary TriPort acoustic architecture. This technology enhances the sound quality by providing deep, rich bass while maintaining clarity in higher frequencies. The result is a well-balanced audio profile that appeals to various musical tastes, ensuring that every note is delivered with precision.

The product lineup includes user-friendly designs that focus on comfort and usability. The headphones feature plush ear cushions and a lightweight frame, making them suitable for extended listening sessions without discomfort. Furthermore, the intuitive touch controls allow users to adjust volume, skip tracks, or take calls seamlessly.

Bose II has also integrated smart technology features. Voice assistant compatibility is a significant highlight, enabling users to access their device’s voice assistant with ease. Whether it's checking the weather, sending a message, or playing music, hands-free control enhances convenience.

Battery life is another crucial aspect of Bose II products. The devices typically offer long-lasting playback time, with quick charging capabilities. Users can enjoy hours of uninterrupted listening, making them perfect for travel and daily commutes.

Durability is woven into the design philosophy of Bose II, with many headphones and speakers featuring water-resistant properties. This added resilience makes them suitable for both indoor and outdoor use, catering to an active lifestyle.

Moreover, Bose II products often come with a companion app that allows for further customization. Users can adjust equalizer settings, manage noise cancellation levels, and access software updates, providing a personalized audio experience.

Overall, Bose II stands out with its combination of advanced sound technologies, thoughtful design, and user-centric features, solidifying its reputation as a top choice for audiophiles and casual listeners alike.