IT IS ONLY POSSIBLE TO CONNECT 1 DEVICE AT A TIME TO THE RECEIVER - EITHER THE LAVALIER MICROPHONE OR THE HANDHELD MICROPHONE. Package includes: 1 x Transmitter (Sennheiser SK AVX) + 1 extra battery + lavalier microphone The SK AVX is the bodypack transmitter for the AVX system. It features self configuring digital transmission which eliminates time-consuming radio frequency setup. The AVX matches perfectly to your camera's input sensitivity without having to adjust the audio level on the microphone. https://en-uk.sennheiser.com/camera-bodypack-transmitter-wireless-microphone-system-sk-avx - 1 x Handheld Microphone (Sennheiser MD 42) High-quality omni-directional microphone for rough use in live reporting and broadcasting environments. Excellent speech intelligibility. Easy handling. Avoids wind and handling noise problems. Extra long body. https://en-uk.sennheiser.com/reporter-microphone-omni-directional-md-42 - 1 x Receiver (Sennheiser EKP AVX) + XLR to minijack adaptor + 1 extra battery The EKP AVX is the ultra compact receiver for the AVX wireless microphone system. It plugs directly into the XLR audio input of your camera or recording device. The EKP can also be connected to DSLRs with the included minijack adaptor. https://en-uk.sennheiser.com/camera-receiver-extern-wireless-microphone-system-ekp-avx