![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 Noise-canceling Bluetooth® stereo headset with aptX® high-fidelity wireless audio capability at Crutchfield Sennheiser MM 550-X Noise-canceling Bluetooth® stereo headset with aptX® high-fidelity wireless audio capability at Crutchfield](https://images.crutchfieldonline.com/ImageHandler/trim/750/457/products/2012/6/143/g143MM550X-o_packaging.jpeg)
Sennheiser MM 550-X Noise-canceling Bluetooth® stereo headset with aptX® high-fidelity wireless audio capability at Crutchfield
![Synergy Digital Wireless Headset Battery, Works with Sennheiser MM 550 Wireless Headset, (Li-Pol, 3.7, 270mAh), Compatible with Sennheiser 0121147748, BA 370 PX, BA370, BA-370PX Battery - Walmart.com - Walmart.com Synergy Digital Wireless Headset Battery, Works with Sennheiser MM 550 Wireless Headset, (Li-Pol, 3.7, 270mAh), Compatible with Sennheiser 0121147748, BA 370 PX, BA370, BA-370PX Battery - Walmart.com - Walmart.com](https://i5.walmartimages.com/asr/7d18265b-d753-4edd-80ee-fe955e70bf23.70387a1e75942d30f1be5e024607d3f3.jpeg?odnWidth=612&odnHeight=612&odnBg=ffffff)
Synergy Digital Wireless Headset Battery, Works with Sennheiser MM 550 Wireless Headset, (Li-Pol, 3.7, 270mAh), Compatible with Sennheiser 0121147748, BA 370 PX, BA370, BA-370PX Battery - Walmart.com - Walmart.com
![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
![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://i.redd.it/ogdozc4p49841.jpg)