Selling points: 
* Wireless transmission provides real time video on DVR to view effect as you record; * Excellent night vision(Minimum Illumination 0.008Lux); * High quality image (786 x 576pix); * Super long continuous working time(1.3 hours); * Min. 100m transmission distance without blocks; * Professional design for business men and students. 
Application: You can hang it on pocket, place it on a desk, and even hold it in hand to write;It starts transmitting! It's ideal for businessmen, law enforcement agencies and journalists, professional to fulfill their undercover assignments: such as evidence collection, hidden investigations, surveillance, etc. It's also great as a toy for hobby enthusiasts, as for body worn solutions. Specification: 
 
| Item | 
Value |  
| Transmission Frequency | 
2.4G | 
2414Mhz(CH1); 2468MHz(CH4) |  
| 2.3G | 
2370Mhz(CH1); 2510MHz(CH4) |  
| Audio subcarrier frequency | 
6.0Mhz |  
| 
 Antenna  | 
Built-in 2.4G antenna |  
| 
 Transmitting Range  | 
300 feet in line of sight |  
| CMOS Total Pixels | 
786 x 576(PAL) 656 x 492(NTSC) |  
| 
 Horizontal resolution  | 
520TV line |  
| Minimum Illumination | 
0.008Lux / F1.5 |  
| 
 Built-in mic.  | 
55dB high sensitivity |  
| View Angle | 
55 |  
| camera lens focus | 
 Beyond 3m vicinity:10mm  |  
| Transmission Power | 
10mW |  
| Battery Performance | 
Li-ion Battery 160mAH |  
| Working Time | 
1.3 hours |  
| 
 Charge time  | 
 1.5 hour  |  
| 
 Operating voltage  | 
 DC 5V  |  
| 
 Operating current  | 
 105MA  |  
| 
 Dimensions( LX D)  | 
 144X14.5 mm  |  
| Weight  | 
30g |   
Package:  
1 * wireless pen camera 1 * AC Adapter    |