Answer: Headest external 16 ohm speaker. With recording function by TF card (TF card is not included). Please put the power off when you do not use it, so as not to damage the machine.Probe is precision parts, so please do not disassemble. Works on wooden walls, doors, windows, steel plates, etc. Highly Sensitive, carefully adjust audio slowly, as not to cause discomfort to your ear-buds. Anyone else ordering this device should only be ordering it as a simple toy since MANY COUNTRIES STRICTLY PROHIBIT OWNERSHIP OF bug DEVICES. 1 x Wall microphone voice bug with record function. 1 x charger adapter (default is US PIN). 1 x Audio cable with probe. The item "Enhanced Wall microphone voice /ear listen through wall device spy bug Recording" is in sale since Sunday, July 11, 2021. This item is in the category "Consumer Electronics\Other Consumer Electronics". The seller is "xmanxman999" and is located in Hong Kong. This item can be shipped worldwide.