Sennheiser EW-D SKM-S S1-7, Digital Handheld Transmitter for ew-D Radio Links, Frequency range S1-7: 606.2 - 662 MHz, With on/off switch, Operation with 2x 1.5 volt AA batteries or optional BA70 rechargeable battery (not included), Transmitting power: 10 mW, Dimensions: 40 x 200 mm (without microphone capsule), Weight: approx. 195 g (without microphone capsule)@+@+*Note:* Microphone capsule not included