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main feature: 1. Noise reduction technology: based on multiple real samples in the frequency range of 100 ~ 2000HZ, the average noise reduction effect was calculated using huawei laboratory model test. The actual effect varies depending on the size of the user's ear, the structure of the ear, the position of the wearer, and whether chewing is affected. 2. High-speed cycling is still the data of unimpeded communication in huawei's laboratory, and there may be individual differences in actual use, with slightly different usage habits and environmental factors. Please refer to the actual use. 3. Dual-channel synchronous transmission function requires HOTA upgrade support matching the phone and headset. 4. The ratio with the test results of TWS products from mainstream manufacturers in Washington greatly reduced the game audio delay data from huawei LABS. 5. Billing and usage data are from huawei LABS. By default (active noise reduction is not enabled), the volume is 50%. In ACC mode, the actual battery life is affected by the volume, signal source, environmental interference, product function and usage habits. When charging the headphone case, the headphone is in the charging box. The headset and the amount of battery stored will charge the headset multiple times. 6. Huawei smart phones that support reverse charging must use reverse charging and need to turn on the reverse charging switch. 7. Only huawei smartphones with EMUI10 and later support automatic insertion. 8. Only huawei smartphones with EMUI10 and later support wear sensing. 9. Double-click to customize Settings in the Smart Life application. For more information, see the user's guide. Scene scene functions need to be used in conjunction with EMUI10 and higher versions of huawei smart phones.