The sennheiser ew d skm s wireless handheld transmitter helps you evolve as a vocalist. Its unfaltering signal strength is perfect for singers and spoken word artists who need freedom on stage. Compatible with evolution digital 9000 and neumann capsules its easy to tailor your transmitter to suit your needs. From music venues to college campuses and more youve got 300ft wireless range for up to 90 channels. That means less interruptions. Less noise. Just total clarity from digital uhf transmission. Each ew d skm s has been designed for ultra low latency too. So even when youre using multiple devices in your signal chain youll never have to worry about your performance feeling unnatural. All this and more from a handheld transmitter thats built to tackle the trials of performance. Its all metal chassis prevents knocks drops and damages from holding you back whilst still feeling lightweight and comfortable to hold. Just connect and enjoy up to eight hours operation time via aa battery power or up to twelve hours with the optional lithium ion battery pack.