Sennheiser Momentum 2 / 3, HD 4.40BT, HD 4.50, Urbanite XL Rechargeable Battery - 3.7V 620mAh AHB622540
A good quality replacement battery for the Sennheiser Momentum 2.0 / Momentum 3.0, HD 4.40 / 4.50, Urbanite XL wireless headphones.
Built-in protection circuit (PCM) prevents over charging/discharging.
Actual measured dimensions (mm): D5.9 x W25.2 x L41
Shipped fast and secure from the UK (global shipping available).
If you have any questions at all, or if you don't see the battery you require, please ask.