This wireless lavalier microphone from DJI is the perfect addition to your photography or videography equipment. With a range of up to 250 metres and a frequency response of 48 KHz, you can capture high-quality audio from a distance. The microphone comes with a charging case and requires one A battery, which is included in the package. It is compatible with various devices such as laptops, personal computers, cameras, and smartphones, and has a signal-to-noise ratio of 80 dB. The microphone has a polar pattern of omnidirectional and an impedance of 32 Ohm. The package dimensions are 14.4 x 11.8 x 7.1 centimetres and the item weight is 420 grams. This product is ideal for those looking for a reliable and high-quality microphone for their photography or videography needs.