Bose Aviation Headset Series II Owner's guide - Page 22

Technical Information Headset Weight 22 oz. (567 grams) Temperature and Altitude (Category A1) Operating Temperature: +5° to +131° F (-15° to +55° C) Storage Temperature: -67° to +158° F (-55° to +70° C) Altitude: 15,000 ft. maximum pressure altitude for full cancellation The Bose® Aviation Headset Series II headset, adapter cables, battery packs, and boom microphone are FAA approved to TSO c-57a and c-58a. The Bose Aviation Headset Series II has been designed to function in or withstand exposure to the following environmental conditions. Environmental categories cited refer to RTCA/DO-160C, 4 Dec 1989 and DO-214, 4 Mar 1993. Condition Category AF Conducted Susceptibility B Humidity B Magnetic Effect Z Power Input B RF Susceptibility T Vibration P&S Voltage Spike A Shock drop...12 times, 1 meter onto concrete 22