The BA 20 Recharging Battery Pack from Sennheiser is for the AVX EKP digital wireless system. It is compatible with the AVX-ME 2, the AVX-MK 2, the AVX-835 and the AVX-MMD 42-1 systems.

PRODUCT HIGHLIGHTS :

• For Sennheiser Wireless AVX Systems
• 3.6V Output Voltage
• Uses a standard USB Power Supply/Charger
• Charges via USB Port on Computer