![Sennheiser MM 550-X Travelling Headset Review - Active Noise Cancellation, SRS, BT and TalkThrough | Technology X Sennheiser MM 550-X Travelling Headset Review - Active Noise Cancellation, SRS, BT and TalkThrough | Technology X](https://www.technologyx.com/wp-content/uploads/2014/02/Sennheiser-MM-550-X-Travelling-Headphones-Featured.jpg)
Sennheiser MM 550-X Travelling Headset Review - Active Noise Cancellation, SRS, BT and TalkThrough | Technology X
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Amazon.com: Replacement Battery for SENNHEISER 450 Travel 550 Travel MM 400 MM 400-X MM 450 MM 450-X MM 500-X MM 550 MM-550-X PCX 360 BT PX 210 BT PX 310 BT PX
![Ive loved my MM 550-X bluetooth headphones to death. Ive used them for listening weekly since 2013 and they sadly slowly dying on me. When they came out Bluetooth headphones were such Ive loved my MM 550-X bluetooth headphones to death. Ive used them for listening weekly since 2013 and they sadly slowly dying on me. When they came out Bluetooth headphones were such](https://preview.redd.it/ogdozc4p49841.jpg?auto=webp&s=5a24dbc6e1e9cdceaa19b2608877ef5ea897c79b)
Ive loved my MM 550-X bluetooth headphones to death. Ive used them for listening weekly since 2013 and they sadly slowly dying on me. When they came out Bluetooth headphones were such
![Amazon.com: Replacement Battery for SENNHEISER 450 Travel, 550 Travel, MM 400, MM 400-X, MM 450, MM 450-X, MM 500-X, MM 550, MM-550-X, PCX 360 BT, PX 210 BT, PX 310 BT, PX Amazon.com: Replacement Battery for SENNHEISER 450 Travel, 550 Travel, MM 400, MM 400-X, MM 450, MM 450-X, MM 500-X, MM 550, MM-550-X, PCX 360 BT, PX 210 BT, PX 310 BT, PX](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/51HswVE2oHL.jpg)
Amazon.com: Replacement Battery for SENNHEISER 450 Travel, 550 Travel, MM 400, MM 400-X, MM 450, MM 450-X, MM 500-X, MM 550, MM-550-X, PCX 360 BT, PX 210 BT, PX 310 BT, PX
![Sennheiser MM 550-X Travelling Headset Review - Active Noise Cancellation, SRS, BT and TalkThrough | Technology X Sennheiser MM 550-X Travelling Headset Review - Active Noise Cancellation, SRS, BT and TalkThrough | Technology X](https://www.technologyx.com/wp-content/uploads/2014/02/Sennheiser-MM-550-X-Travelling-Headphones-Replaceable-Battery.jpg)
Sennheiser MM 550-X Travelling Headset Review - Active Noise Cancellation, SRS, BT and TalkThrough | Technology X
![Sennheiser MM 550-X Travelling Headset Review - Active Noise Cancellation, SRS, BT and TalkThrough | Technology X Sennheiser MM 550-X Travelling Headset Review - Active Noise Cancellation, SRS, BT and TalkThrough | Technology X](https://www.technologyx.com/wp-content/uploads/2014/02/Sennheiser-MM-550-X-Travelling-Headphones-Accessories.jpg)
Sennheiser MM 550-X Travelling Headset Review - Active Noise Cancellation, SRS, BT and TalkThrough | Technology X
![Sennheiser MM 550-X Travelling Headset Review - Active Noise Cancellation, SRS, BT and TalkThrough | Technology X Sennheiser MM 550-X Travelling Headset Review - Active Noise Cancellation, SRS, BT and TalkThrough | Technology X](https://www.technologyx.com/wp-content/uploads/2014/02/Sennheiser-MM-550-X-Travelling-Headphones-oPERATINGSwitches.jpg)