Sennheiser MOMENTUM True Wireless 2 Instruction manual MOMENTUM True Wireless - Page 34
Information on the built-in rechargeable battery, Installing firmware updates
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Care and maintenance of the earbuds/charging case Information on the built-in rechargeable battery Sennheiser ensures and guarantees that the rechargeable batteries perform at their optimum upon purchase of the product. If, upon purchase or within the warranty period, you suspect that a rechargeable battery is obviously defective or if a charging error/battery error is displayed (> 8), stop using the product, disconnect it from the power supply system and immediately return the product to any Sennheiser service partner. Installing firmware updates Firmware updates can be downloaded free of charge from the Internet using the Sennheiser Smart Control app. ▷ Connect your earphones to your smartphone and start the Smart Control app (> 20). ▷ The app provides information on available firmware updates and guides you through the installation process. 34 | MOMENTUM True Wireless 2