Sennheiser Momentum True Wireless 2, hands on: Good battery life and top-quality sound, at a price | ZDNET
3.7V 800mAh Replacement Battery for Sennheiser HD 4.40, HD 4.50, Urbanite XL, Momentum 2.0 Wireless Bluetooth Headphones, AHB622540N01 - Newegg.com
Sennheiser MOMENTUM Wireless Review
Sennheiser MOMENTUM True Wireless 3 Earbuds -Bluetooth In-Ear Headphones for Music and Calls with ANC, Multipoint connectivity , IPX4, Qi charging, 28-hour Battery Life Compact Design - White - Walmart.com
Sennheiser Momentum True Wireless 2 review: These earbuds beat out AirPods Pro - CNET
User manual Sennheiser MOMENTUM 2 Wireless (English - 34 pages)