Today I received my replacement battery for my Sennheiser | EPOS GSP 670s They are a wireless headset geared towards the gamer demographic, and boasts the same quality as other Sennheiser equipment. I've had the headset for about 3 years now, and the battery life was not the greatest — although I didn't take extra care into handling the battery throughout its life. I will be monitoring the charge life for the next few cycles - I have high hopes for the non-OEM battery replacement.
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