Sennheiser Momentum 4 Wireless: Retailer leaks new design, 60 hours of battery life, Qualcomm aptX Adaptive support and a lower launch price - NotebookCheck.net News
Sennheiser HDR 65 Headphones with T60 Base Wireless and charger | eBay
Wireless Headset Battery 3.7V/270mAh BA370, 0121147748 for Sennheiser 450,550,MM400,PX210BT,PX360,360BT,PXC310
Battery suitable for Sennheiser SET 2500 - 60 mAh 2.4 V battery - BatteryUpgrade