SpecificationItem Type: Audio MixerModel: CVM-AX1Material: Aluminum AlloyInput: Single Sound Channel x 2(L/R)，Stereo x 1(S)Output: 3.5 Port Output, Earphone OutputBattery: 1.5V AAA x 2(Not Included)Working Temperature: 0℃ ~ +50℃Weight: Approx. 225gSize: Approx. 95x55x49mm/3.74x2.17x1.93inchDescription:This product can used with cameras and camcorders for audio recording. It is designed to support active/passive microphone, real-time monitoring, dual volume adjustment, single/dual channel conversion, working status indicator light, AAA battery power supply, multiple hot shoe mount, etc, made of all aluminum alloy material, function very powerful, giving you bring better sound qualityPackage List1 x AX1 Audio Mixer1 x Manual 1 x Hot Shoe Base1 x 3.5mm Audio CableNote1. Single sound channel and stereo input, cannot used simultaneously, one type of input can selected at a time2. Before using, please dial the \LINE/MIC/3V switch\" to the corresponding position according to the microphone type:A. Use LINE IN to input and set the switch to \"LINE\"; B. Switch to \"MIC\" using passive microphone; C. Using the active microphone, turn the switch to \"3V\"3. Please keep away from heat source or interference source when using4. Avoid falling, colliding or slamming when in use5. Do not use in rainy or humid environment, otherwise there will be the danger of short circuit"