Sennheiser ew-D SKM-S U1/5
Sennheiser EW-D SKM-S U1/5 - digital handheld transmitter for EW-D wireles systems with on/off switch, without microphone capsule, operation with 2x 1.5 volt AA batteries or optional BA70 rechargeable battery, frequency range U1/5: 823,2–831,8 / 863,2–864,8 MHz, transmit power: 10 mW, dimensions: 40 x 200 mm (without microphone capsule), weight: approx. 195 g (without microphone capsule)