ECM-250 Sony Electret Condenser Mic C/W original Box and Cable

Excellent cosmetic & operating condition

ECM-250 Sony Electret Condenser Mic (The Sony ECM-250 is a vintage 1970s electret condenser microphone known for its cardioid pickup pattern and small diaphragm. It operates on a single AA battery for power, requiring no phantom power, and is a low-impedance, all-metal construction microphone. Its applications include vocals, guitar cabinets, and drums. 
Features and performance
Microphone type: Electret condenser with a cardioid pickup pattern.
Power: Powered by a single AA battery, so it does not need phantom power from a mixer or interface.
Technology: Uses FET (Field Effect Transistor) technology for low noise and high sensitivity.
Frequency response: Designed for clarity with a slight boost at 8kHz to enhance highs.
Durability: Made with all-metal construction, though vintage models may show cosmetic wear.
Impedance: Low impedance at 200 ohms. 
Applications
Vocals: Works well for capturing vocals due to its frequency response and built-in windscreen.
Instruments: Suitable for recording instruments, such as guitar cabinets.
Drums: Can be used for drums, including as an overhead micro