20-20 000 hz
500 ohms
omnidirectional
micro size about 3.5 cm

I use it for 2 years.
Inter / off and Mono / Stro on the case.
A 1.5 V battery power
Trs sensible.
Supports strong sound sources (even a group lectrogne example)
Discreet, sensitive to handling noise and wind
(Hlas no windscreen for this size of micro)

In short trs good product and reliable.