Bose QuietComfort 15 Owner's guide - Page 7

English TAB 2, 10 TAB 3, 11 TAB 4, 12 TAB 5, 13 TAB 6, 14 TAB 7, 15 TAB 8, 16 Storing the headphones To store the headphones in the case, rotate the earcups inward, then place the headphones in the case. Battery life and replacement Although it varies by usage, battery life averages 35 hours. The battery light indicator starts flashing when there are approximately 5 hours of battery life remaining. When a replacement is needed, use a AAA alkaline battery (IEC LR03). Note: Remaining battery life may vary when using rechargeable batteries. NiMH batteries, composed of nickel metal hydride, are recommended. Cleaning the headphones Scheduled cleaning is not required. However, you can simply wipe the outside surfaces with a damp cloth, as needed. Also, be sure that the earcup ports are clear and that no moisture is allowed into the earcups. CAUTION: Incorrectly rotating the earcups can damage the headphones. 5