Feature:

-- Rechargeable Li-battery in Camera for portable usage
-- Tiny size for discreet observation and portability
-- Built-in microphone for audio monitoring
-- 4 channels available to avoid possible interference
-- Up to 100m (330ft.) transmission range in open space

Diagrammatic:

Specification:

Imaging Sensor : CMOS
CMOS Total Pixels : 628x582(PAL) ; 510x492(NTSC)
Horizontal Resolution: 380 TV Lines
View Angle:  60 Degree
Minimum Illumination:  0  Lux
Transmission Frequency:  ISM 2,400~2,483 MHz
Transmission Power : 10mW/CE; 2mW/FCC
Modulation Type:  FM
Bandwidth : 18 MHz
Power Supply:  +5 VDC
Battery Type: Lithium Battery
Battery Capacity: 500mAh
Charge Time: 2hours
Working Time: 5hours
Consumption Current(Max.) : 90mA 
Unobstructed Effective Range : 100m (Min)
Dimensions(Diameter x L):  Diameter 30 x79 mm
Weight : 120 g
Operating Temperature : -10 ~ +50 (Degree C) / +14 ~ +122 (Degree F)
Storage Temperature:  -20 ~ +85 (Degree C) / -4 ~ +185 (Degree F)
Operating Humidity:  85% RH

Receiver(709):
Power Supply:  +8 VDC
Consumption Current (Max.): 190mA
Receiving Frequency: ISM 2,400MHz~2,483MHz
Input VSWR: 2:1
Demodulation Type: FM
Intermediate Frequency: 480MHz
Frequency Stabilization: +/- 100 ppm
Local Leakage at RF Input Terminal: <=-55 dBm
Receiving Sensitivity: <= -85 dBm
Video Output Signal Impedance: 75 ohm
Video Output Signal Level: 1.0 V +/- 0.15 Vpp
Video Output Signal Polarity: Negative
Video S/N Ratio: 38dB
Audio Output Signal Impedance: 600 ohm
Audio Output Signal Level: 1.25 V +/- 0.25 Vpp / 1 kHz
Audio Output Frequency Range: 250 Hz ~ 10 kHz
Left Subcarrier Frequency: 6.5 MHz
Unobstructed Effective Range: 100 m (Min.)
Dimensions(WxLxH):  82 x 100 x 16 mm (Excluding Antenna)
Weight : 120 g
Operating Temperature : -10 ~ +50 (Degree C) / +14 ~ +122 (Degree F)
Storage Temperature:  -20 ~ +85 (Degree C) / -4 ~ +185 (Degree F)
Operating Humidity:  85% RH