Sennheiser EZL 2020-20L transport and charging case. Highlights: Fast charging of up to 20 HDE 2020-D receivers in approx. 2.5 hrs. Charging bay for SK 2020-D Charging bay for BA 2015 spare battery Safe recharging with temperature monitoring Copy button copies the selected channel of one receiver to all others and sets them to medium volume. Please note: Order-specific product! Order cannot be cancelled, returned or exchanged.