Okay, I found my Sony ECM-959A box with all the accessories and users manual. Actually the users manual is not a book or phamplet but a gigantic huge one folded up page. I hate that but I will now take a lot of time to type in the specifications read from the gigantic one sheet of folded up instructions for you.
General
Type: One-point stereo (employing the Mid-side system), electret condenser microphone (with back-electret condenser capsules)
Output Plug: L-shaped stereo mini-plug
Microphone cord: 3.8 mm dia. Two core-shielded, OFC (Oxygen-free copper)
Length: Approx. 2m (6 feet 7 inches)
Battery: R6 (size AA) battery
Dimensions: 30 x 175 mm (Outside diameter x length) (1 5/16 by 7 inches)
Mass: Approx. 206g (7.3 oz) including battery
Supplied Accessories: Wind screen (1)
Microphone holder (1) (PF 1/2 screw)
Microphone stand (1)
Microphone stand screw adapter SAD-35 (1), SAD-34 (1)
Carrying case (1)
Operating Instructions (1)
Performance
Frequency Response: 50-18000 Hz
Directivity: Directive angle : 90 Degrees or 120 Degrees (swithable)
Output Impedance: 550 ohms +/-20%, unbalanced
Sensitivity (directive angle 120 Degrees)
Open circuit voltage: -48 +/-3 dB
Effective output level: -51.4 +/-3 dB
Difference between L and R channel sensitivity: Less than 3dB
Recommended load impedance: More than 3 Kilohms
Power Requirements: Normal operating voltage: 1.5 V, R6 (size AA) battery
Minumum operating voltage: Appox 1.1 V
Battery life: Approx. 2,500 hours with a Sony R6P (size AA) battery
Noise: Signal-to-noise ratio: More than 69dB (1,000 Hz, 1Pa)
Inherent noise converted to the equivalent input sound level: <25dBspl
Wind noise (when usingthe wind screen): <4dBspl
Induction noise from external magnetic field: <10dBspl
Maximum sound pressure level: More than 114 dBspl
Dynamic range: More than 89 dB
Operating temperature: 0 Degrees C to 40 Degrees C (32 Degrees F to 104 Degrees F)
Storage temparture: -20 Degrees C to +60 Degrees C (-4 Degrees F to 140 Degrees F)