2 x Handheld Transmitters. Dual Channel Receiver. Foam Lined- ABS Carry CasePower supply: DC 12-15V- 500mA (adaptor supplied) Frequencies: 173.8Mhz/175.0Mhz System in case dimensions: 310 x 430 x 100mm System in case weight: 1.8g. The RM 10 is a dual channel- VHF wireless microphone system supplied with receiver and 2 handheld microphone transmitters. Suitable for mobile entertainers and small venues- the system is supplied in a foam lined ABS case for protection during transportation. Each mic requires 2 x 1.5V AA batteries.. Twin handheld